/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:14:08,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:14:08,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:14:08,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:14:08,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:14:08,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:14:08,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:14:08,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:14:08,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:14:08,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:14:08,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:14:08,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:14:08,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:14:08,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:14:08,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:14:08,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:14:08,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:14:08,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:14:08,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:14:08,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:14:08,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:14:08,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:14:08,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:14:08,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:14:08,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:14:08,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:14:08,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:14:08,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:14:08,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:14:08,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:14:08,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:14:08,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:14:08,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:14:08,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:14:08,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:14:08,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:14:08,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:14:08,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:14:08,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:14:08,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:14:08,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:14:08,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:14:08,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:14:08,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:14:08,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:14:08,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:14:08,920 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:14:08,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:14:08,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:14:08,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:14:08,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:14:08,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:14:08,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:14:08,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:14:08,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:14:08,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:14:08,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:14:08,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:14:08,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:14:08,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:14:08,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:14:08,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:14:08,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:14:08,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:14:08,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:14:08,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:14:08,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:14:08,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:14:08,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:14:08,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:14:08,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:14:08,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:14:09,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:14:09,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:14:09,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:14:09,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:14:09,434 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:14:09,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14.c [2020-10-29 08:14:09,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5713030f0/f7588cc676e44bf18981fbd340111af2/FLAG1bdf76f44 [2020-10-29 08:14:10,651 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:14:10,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label14.c [2020-10-29 08:14:10,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5713030f0/f7588cc676e44bf18981fbd340111af2/FLAG1bdf76f44 [2020-10-29 08:14:11,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5713030f0/f7588cc676e44bf18981fbd340111af2 [2020-10-29 08:14:11,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:14:11,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:14:11,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:14:11,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:14:11,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:14:11,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:14:11" (1/1) ... [2020-10-29 08:14:11,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d72417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:11, skipping insertion in model container [2020-10-29 08:14:11,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:14:11" (1/1) ... [2020-10-29 08:14:11,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:14:11,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:14:12,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:14:12,578 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:14:13,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:14:13,127 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:14:13,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13 WrapperNode [2020-10-29 08:14:13,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:14:13,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:14:13,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:14:13,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:14:13,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:14:13,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:14:13,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:14:13,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:14:13,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:14:13,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:14:13,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:14:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:14:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:14:13,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:14:13,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:14:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:14:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:14:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:14:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:14:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:14:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:14:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:14:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:14:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:14:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:14:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:14:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:14:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:14:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:14:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:14:23,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:14:23,603 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:14:23,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:14:23 BoogieIcfgContainer [2020-10-29 08:14:23,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:14:23,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:14:23,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:14:23,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:14:23,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:14:11" (1/3) ... [2020-10-29 08:14:23,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a8a0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:14:23, skipping insertion in model container [2020-10-29 08:14:23,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13" (2/3) ... [2020-10-29 08:14:23,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a8a0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:14:23, skipping insertion in model container [2020-10-29 08:14:23,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:14:23" (3/3) ... [2020-10-29 08:14:23,626 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label14.c [2020-10-29 08:14:23,644 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:14:23,653 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:14:23,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:14:23,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:14:23,716 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:14:23,717 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:14:23,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:14:23,717 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:14:23,717 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:14:23,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:14:23,718 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:14:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:14:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 08:14:23,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:23,775 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] [2020-10-29 08:14:23,775 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:23,785 INFO L82 PathProgramCache]: Analyzing trace with hash 357539482, now seen corresponding path program 1 times [2020-10-29 08:14:23,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:23,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449429346] [2020-10-29 08:14:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:24,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:24,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 08:14:24,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-29 08:14:24,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:24,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:14:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 08:14:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:14:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:25,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:25,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:25,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:14:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:25,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:14:25,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449429346] [2020-10-29 08:14:25,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:14:25,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:14:25,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716650953] [2020-10-29 08:14:25,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:14:25,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:25,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:14:25,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:14:25,090 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:14:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:39,469 INFO L93 Difference]: Finished difference Result 1721 states and 3132 transitions. [2020-10-29 08:14:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:14:39,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-29 08:14:39,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:39,499 INFO L225 Difference]: With dead ends: 1721 [2020-10-29 08:14:39,499 INFO L226 Difference]: Without dead ends: 1035 [2020-10-29 08:14:39,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:14:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-29 08:14:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1009. [2020-10-29 08:14:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-29 08:14:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1706 transitions. [2020-10-29 08:14:39,651 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1706 transitions. Word has length 54 [2020-10-29 08:14:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:39,652 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1706 transitions. [2020-10-29 08:14:39,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:14:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1706 transitions. [2020-10-29 08:14:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 08:14:39,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:39,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:39,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:14:39,665 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1342805378, now seen corresponding path program 1 times [2020-10-29 08:14:39,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:39,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314936514] [2020-10-29 08:14:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:39,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 08:14:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:14:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-29 08:14:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:41,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:14:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:14:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:41,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:41,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:14:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:41,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:41,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:41,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:41,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:14:41,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:41,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 08:14:41,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:41,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:14:41,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:14:41,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314936514] [2020-10-29 08:14:41,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:14:41,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:14:41,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362002879] [2020-10-29 08:14:41,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:14:41,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:41,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:14:41,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:14:41,517 INFO L87 Difference]: Start difference. First operand 1009 states and 1706 transitions. Second operand 7 states. [2020-10-29 08:14:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:59,639 INFO L93 Difference]: Finished difference Result 2980 states and 5071 transitions. [2020-10-29 08:14:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:14:59,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-29 08:14:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:59,654 INFO L225 Difference]: With dead ends: 2980 [2020-10-29 08:14:59,654 INFO L226 Difference]: Without dead ends: 1977 [2020-10-29 08:14:59,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:14:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2020-10-29 08:14:59,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1928. [2020-10-29 08:14:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2020-10-29 08:14:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2852 transitions. [2020-10-29 08:14:59,746 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2852 transitions. Word has length 123 [2020-10-29 08:14:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:59,747 INFO L481 AbstractCegarLoop]: Abstraction has 1928 states and 2852 transitions. [2020-10-29 08:14:59,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:14:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2852 transitions. [2020-10-29 08:14:59,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 08:14:59,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:59,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:59,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:14:59,755 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:59,756 INFO L82 PathProgramCache]: Analyzing trace with hash 158808202, now seen corresponding path program 1 times [2020-10-29 08:14:59,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:59,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273881381] [2020-10-29 08:14:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:59,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:01,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:01,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:15:01,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:15:01,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-29 08:15:01,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:01,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:15:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 08:15:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:01,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:01,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:01,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:15:01,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:01,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:01,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:01,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 08:15:01,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 08:15:01,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:01,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 08:15:01,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:15:01,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273881381] [2020-10-29 08:15:01,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:15:01,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:15:01,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978651200] [2020-10-29 08:15:01,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:01,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:01,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:01,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:01,566 INFO L87 Difference]: Start difference. First operand 1928 states and 2852 transitions. Second operand 7 states. [2020-10-29 08:15:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:15,952 INFO L93 Difference]: Finished difference Result 4379 states and 6825 transitions. [2020-10-29 08:15:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:15:15,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-29 08:15:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:15,968 INFO L225 Difference]: With dead ends: 4379 [2020-10-29 08:15:15,968 INFO L226 Difference]: Without dead ends: 2457 [2020-10-29 08:15:15,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:15:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2020-10-29 08:15:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1920. [2020-10-29 08:15:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-29 08:15:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2640 transitions. [2020-10-29 08:15:16,050 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2640 transitions. Word has length 133 [2020-10-29 08:15:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:16,051 INFO L481 AbstractCegarLoop]: Abstraction has 1920 states and 2640 transitions. [2020-10-29 08:15:16,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:15:16,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2640 transitions. [2020-10-29 08:15:16,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-29 08:15:16,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:16,056 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, 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] [2020-10-29 08:15:16,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:15:16,056 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:16,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:16,057 INFO L82 PathProgramCache]: Analyzing trace with hash 935637406, now seen corresponding path program 1 times [2020-10-29 08:15:16,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:16,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740205262] [2020-10-29 08:15:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:17,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:17,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:15:17,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:15:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-29 08:15:17,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:17,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:15:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:15:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:15:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:17,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:17,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:17,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:17,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:15:17,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:17,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:17,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:18,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:18,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:18,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:18,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 08:15:18,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:18,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:15:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:18,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:18,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:18,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:15:18,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 08:15:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:18,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:15:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 110 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:15:18,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740205262] [2020-10-29 08:15:18,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:18,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:15:18,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388305039] [2020-10-29 08:15:18,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:15:18,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:18,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:15:18,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:15:18,400 INFO L87 Difference]: Start difference. First operand 1920 states and 2640 transitions. Second operand 6 states. [2020-10-29 08:15:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:35,922 INFO L93 Difference]: Finished difference Result 5691 states and 7913 transitions. [2020-10-29 08:15:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:15:35,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-29 08:15:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:35,953 INFO L225 Difference]: With dead ends: 5691 [2020-10-29 08:15:35,953 INFO L226 Difference]: Without dead ends: 2882 [2020-10-29 08:15:35,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:15:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-10-29 08:15:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2855. [2020-10-29 08:15:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2855 states. [2020-10-29 08:15:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 3669 transitions. [2020-10-29 08:15:36,052 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 3669 transitions. Word has length 210 [2020-10-29 08:15:36,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:36,053 INFO L481 AbstractCegarLoop]: Abstraction has 2855 states and 3669 transitions. [2020-10-29 08:15:36,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:15:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 3669 transitions. [2020-10-29 08:15:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 08:15:36,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:36,058 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, 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] [2020-10-29 08:15:36,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:15:36,058 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:36,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:36,059 INFO L82 PathProgramCache]: Analyzing trace with hash 514079247, now seen corresponding path program 1 times [2020-10-29 08:15:36,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:36,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551658524] [2020-10-29 08:15:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:37,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:37,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 08:15:37,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1586 [2020-10-29 08:15:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:37,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:15:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:15:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:37,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:37,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:37,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:15:37,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:37,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:37,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:38,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:38,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:38,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 08:15:38,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:38,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:38,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:15:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:15:38,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:15:38,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 08:15:38,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:38,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:15:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:15:38,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551658524] [2020-10-29 08:15:38,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:38,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:38,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429986802] [2020-10-29 08:15:38,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:38,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:38,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:38,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:38,378 INFO L87 Difference]: Start difference. First operand 2855 states and 3669 transitions. Second operand 7 states. [2020-10-29 08:15:55,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:55,716 INFO L93 Difference]: Finished difference Result 7573 states and 10154 transitions. [2020-10-29 08:15:55,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:15:55,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-29 08:15:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:55,746 INFO L225 Difference]: With dead ends: 7573 [2020-10-29 08:15:55,746 INFO L226 Difference]: Without dead ends: 4724 [2020-10-29 08:15:55,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:15:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2020-10-29 08:15:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 4701. [2020-10-29 08:15:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4701 states. [2020-10-29 08:15:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 6042 transitions. [2020-10-29 08:15:55,939 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 6042 transitions. Word has length 211 [2020-10-29 08:15:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:55,939 INFO L481 AbstractCegarLoop]: Abstraction has 4701 states and 6042 transitions. [2020-10-29 08:15:55,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:15:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 6042 transitions. [2020-10-29 08:15:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 08:15:55,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:55,943 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, 2, 2, 2, 2, 2, 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] [2020-10-29 08:15:55,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:15:55,944 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:55,944 INFO L82 PathProgramCache]: Analyzing trace with hash -344600462, now seen corresponding path program 1 times [2020-10-29 08:15:55,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:55,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111091019] [2020-10-29 08:15:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:56,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:01,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 08:16:01,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:16:01,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 08:16:01,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:01,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:01,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:16:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:16:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:16:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:01,230 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:16:01,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:01,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:01,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:01,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:16:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:01,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:16:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:01,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:01,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:01,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-29 08:16:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:01,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:16:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:16:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:01,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:01,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:16:01,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:01,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 08:16:01,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:01,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:16:01,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 161 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:16:02,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111091019] [2020-10-29 08:16:02,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:02,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:16:02,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783695822] [2020-10-29 08:16:02,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:16:02,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:02,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:16:02,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:16:02,132 INFO L87 Difference]: Start difference. First operand 4701 states and 6042 transitions. Second operand 10 states. [2020-10-29 08:16:02,367 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:16:08,034 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:16:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:25,672 INFO L93 Difference]: Finished difference Result 14147 states and 18612 transitions. [2020-10-29 08:16:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 08:16:25,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 216 [2020-10-29 08:16:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:25,757 INFO L225 Difference]: With dead ends: 14147 [2020-10-29 08:16:25,758 INFO L226 Difference]: Without dead ends: 8991 [2020-10-29 08:16:25,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-29 08:16:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8991 states. [2020-10-29 08:16:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8991 to 8869. [2020-10-29 08:16:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8869 states. [2020-10-29 08:16:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 10771 transitions. [2020-10-29 08:16:26,033 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 10771 transitions. Word has length 216 [2020-10-29 08:16:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:26,034 INFO L481 AbstractCegarLoop]: Abstraction has 8869 states and 10771 transitions. [2020-10-29 08:16:26,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:16:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 10771 transitions. [2020-10-29 08:16:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-29 08:16:26,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:26,038 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:16:26,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:16:26,039 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:26,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash 522933288, now seen corresponding path program 1 times [2020-10-29 08:16:26,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:26,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571214948] [2020-10-29 08:16:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:31,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:31,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 08:16:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:16:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 08:16:31,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:31,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:16:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:16:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 08:16:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:31,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:31,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:31,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:31,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:16:31,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:31,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:16:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:16:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:31,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:31,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:31,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:31,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:31,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 08:16:31,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:31,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:16:31,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:16:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:31,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:16:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:16:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 08:16:31,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:16:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 08:16:31,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571214948] [2020-10-29 08:16:31,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:31,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:16:31,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128101521] [2020-10-29 08:16:31,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:16:31,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:31,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:16:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:16:31,998 INFO L87 Difference]: Start difference. First operand 8869 states and 10771 transitions. Second operand 6 states. [2020-10-29 08:16:32,944 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:16:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:48,104 INFO L93 Difference]: Finished difference Result 17309 states and 21110 transitions. [2020-10-29 08:16:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:16:48,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 227 [2020-10-29 08:16:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:48,140 INFO L225 Difference]: With dead ends: 17309 [2020-10-29 08:16:48,140 INFO L226 Difference]: Without dead ends: 8881 [2020-10-29 08:16:48,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:16:48,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8881 states. [2020-10-29 08:16:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8881 to 8859. [2020-10-29 08:16:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8859 states. [2020-10-29 08:16:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8859 states to 8859 states and 10737 transitions. [2020-10-29 08:16:48,384 INFO L78 Accepts]: Start accepts. Automaton has 8859 states and 10737 transitions. Word has length 227 [2020-10-29 08:16:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:48,385 INFO L481 AbstractCegarLoop]: Abstraction has 8859 states and 10737 transitions. [2020-10-29 08:16:48,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:16:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8859 states and 10737 transitions. [2020-10-29 08:16:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-29 08:16:48,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:48,392 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:48,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:16:48,393 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:48,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:48,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1980313217, now seen corresponding path program 1 times [2020-10-29 08:16:48,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:48,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295120615] [2020-10-29 08:16:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:48,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:48,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:48,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:53,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:53,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-29 08:16:53,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:16:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 08:16:53,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:53,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:16:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 08:16:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:53,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:53,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:53,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:16:53,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:53,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:16:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:16:53,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:53,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:53,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:53,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:16:53,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 08:16:53,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:53,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:53,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:53,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:53,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:16:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:53,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 08:16:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:54,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 08:16:54,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:54,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:16:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:54,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-29 08:16:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:54,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:54,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:54,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:16:54,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:16:54,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:54,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:16:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:16:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:16:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 213 proven. 74 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 08:16:54,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295120615] [2020-10-29 08:16:54,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:54,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:16:54,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908576391] [2020-10-29 08:16:54,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:16:54,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:54,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:16:54,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:16:54,415 INFO L87 Difference]: Start difference. First operand 8859 states and 10737 transitions. Second operand 7 states. [2020-10-29 08:17:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:17,813 INFO L93 Difference]: Finished difference Result 21898 states and 27420 transitions. [2020-10-29 08:17:17,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:17:17,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-29 08:17:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:17,853 INFO L225 Difference]: With dead ends: 21898 [2020-10-29 08:17:17,854 INFO L226 Difference]: Without dead ends: 12094 [2020-10-29 08:17:17,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:17:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12094 states. [2020-10-29 08:17:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12094 to 11959. [2020-10-29 08:17:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11959 states. [2020-10-29 08:17:18,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11959 states to 11959 states and 14249 transitions. [2020-10-29 08:17:18,148 INFO L78 Accepts]: Start accepts. Automaton has 11959 states and 14249 transitions. Word has length 290 [2020-10-29 08:17:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:18,149 INFO L481 AbstractCegarLoop]: Abstraction has 11959 states and 14249 transitions. [2020-10-29 08:17:18,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:17:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand 11959 states and 14249 transitions. [2020-10-29 08:17:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-29 08:17:18,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:18,156 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:18,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:17:18,157 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:18,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1306151164, now seen corresponding path program 1 times [2020-10-29 08:17:18,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:18,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761286300] [2020-10-29 08:17:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:18,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:23,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:23,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-29 08:17:23,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:17:23,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 08:17:23,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:23,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:17:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:17:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:17:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:23,478 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:17:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:23,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:23,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:23,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:17:23,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:23,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:17:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:17:23,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:23,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:23,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:23,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 08:17:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:23,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:17:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:17:23,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:24,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:17:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:24,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:24,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:24,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:17:24,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 08:17:24,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:24,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:17:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:17:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:24,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:24,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:17:24,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:17:24,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:24,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:17:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 140 proven. 159 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:17:24,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761286300] [2020-10-29 08:17:24,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:24,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:17:24,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019591520] [2020-10-29 08:17:24,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:17:24,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:17:24,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:17:24,800 INFO L87 Difference]: Start difference. First operand 11959 states and 14249 transitions. Second operand 10 states. [2020-10-29 08:17:25,092 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:17:33,254 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:17:33,830 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:17:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:50,828 INFO L93 Difference]: Finished difference Result 28588 states and 35972 transitions. [2020-10-29 08:17:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 08:17:50,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 302 [2020-10-29 08:17:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:50,914 INFO L225 Difference]: With dead ends: 28588 [2020-10-29 08:17:50,914 INFO L226 Difference]: Without dead ends: 16628 [2020-10-29 08:17:50,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:17:50,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16628 states. [2020-10-29 08:17:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16628 to 15953. [2020-10-29 08:17:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15953 states. [2020-10-29 08:17:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15953 states to 15953 states and 18722 transitions. [2020-10-29 08:17:51,379 INFO L78 Accepts]: Start accepts. Automaton has 15953 states and 18722 transitions. Word has length 302 [2020-10-29 08:17:51,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:51,380 INFO L481 AbstractCegarLoop]: Abstraction has 15953 states and 18722 transitions. [2020-10-29 08:17:51,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:17:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 15953 states and 18722 transitions. [2020-10-29 08:17:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 08:17:51,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:51,389 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:51,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:17:51,389 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:51,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1402853595, now seen corresponding path program 1 times [2020-10-29 08:17:51,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:51,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941884275] [2020-10-29 08:17:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking...