/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:58:56,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:58:56,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:58:56,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:58:56,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:58:56,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:58:56,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:58:56,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:58:56,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:58:56,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:58:56,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:58:56,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:58:56,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:58:56,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:58:56,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:58:56,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:58:56,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:58:56,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:58:56,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:58:56,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:58:56,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:58:56,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:58:56,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:58:56,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:58:56,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:58:56,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:58:56,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:58:56,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:58:56,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:58:56,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:58:56,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:58:56,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:58:56,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:58:56,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:58:56,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:58:56,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:58:56,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:58:56,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:58:56,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:58:56,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:58:56,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:58:56,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:58:56,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:58:56,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:58:56,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:58:56,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:58:56,848 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:58:56,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:58:56,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:58:56,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:58:56,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:58:56,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:58:56,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:58:56,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:58:56,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:58:56,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:58:56,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:58:56,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:58:56,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:58:56,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:58:56,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:58:56,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:58:56,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:58:56,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:58:56,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:58:56,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:58:56,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:58:56,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:58:56,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:58:56,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:58:56,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:58:56,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:58:57,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:58:57,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:58:57,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:58:57,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:58:57,347 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:58:57,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01.c [2020-10-28 12:58:57,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63467c74/2b0543882c404220aee86e7bcf7bbb8a/FLAGb78cbd94b [2020-10-28 12:58:58,246 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:58:58,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label01.c [2020-10-28 12:58:58,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63467c74/2b0543882c404220aee86e7bcf7bbb8a/FLAGb78cbd94b [2020-10-28 12:58:58,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63467c74/2b0543882c404220aee86e7bcf7bbb8a [2020-10-28 12:58:58,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:58:58,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:58:58,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:58:58,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:58:58,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:58:58,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:58:58" (1/1) ... [2020-10-28 12:58:58,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297f1cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:58, skipping insertion in model container [2020-10-28 12:58:58,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:58:58" (1/1) ... [2020-10-28 12:58:58,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:58:58,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:58:59,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:58:59,358 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:58:59,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:58:59,694 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:58:59,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59 WrapperNode [2020-10-28 12:58:59,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:58:59,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:58:59,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:58:59,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:58:59,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (1/1) ... [2020-10-28 12:58:59,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (1/1) ... [2020-10-28 12:58:59,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (1/1) ... [2020-10-28 12:58:59,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (1/1) ... [2020-10-28 12:58:59,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (1/1) ... [2020-10-28 12:58:59,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (1/1) ... [2020-10-28 12:58:59,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (1/1) ... [2020-10-28 12:58:59,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:58:59,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:58:59,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:58:59,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:58:59,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:58:59,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:59:00,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:59:00,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:59:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:59:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:59:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:59:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:59:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:59:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:59:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:59:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:59:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:59:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:59:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:59:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:59:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:59:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:59:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:59:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:59:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:59:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:59:03,033 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:59:03,034 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:59:03,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:59:03 BoogieIcfgContainer [2020-10-28 12:59:03,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:59:03,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:59:03,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:59:03,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:59:03,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:58:58" (1/3) ... [2020-10-28 12:59:03,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455da1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:59:03, skipping insertion in model container [2020-10-28 12:59:03,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:58:59" (2/3) ... [2020-10-28 12:59:03,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455da1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:59:03, skipping insertion in model container [2020-10-28 12:59:03,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:59:03" (3/3) ... [2020-10-28 12:59:03,046 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label01.c [2020-10-28 12:59:03,058 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:59:03,064 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:59:03,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:59:03,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:59:03,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:59:03,109 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:59:03,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:59:03,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:59:03,109 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:59:03,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:59:03,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:59:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 12:59:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 12:59:03,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:03,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:03,148 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:03,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:03,154 INFO L82 PathProgramCache]: Analyzing trace with hash 758124983, now seen corresponding path program 1 times [2020-10-28 12:59:03,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:03,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201315494] [2020-10-28 12:59:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 12:59:03,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-28 12:59:03,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:59:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:59:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 12:59:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:59:04,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:04,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:59:04,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:59:04,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:59:04,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201315494] [2020-10-28 12:59:04,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:59:04,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:59:04,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178345055] [2020-10-28 12:59:04,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:59:04,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:04,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:59:04,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:59:04,215 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 12:59:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:10,000 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-28 12:59:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:59:10,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-28 12:59:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:10,027 INFO L225 Difference]: With dead ends: 1204 [2020-10-28 12:59:10,027 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 12:59:10,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:59:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 12:59:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-28 12:59:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 12:59:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-28 12:59:10,146 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 51 [2020-10-28 12:59:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:10,147 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-28 12:59:10,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:59:10,147 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-28 12:59:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 12:59:10,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:10,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:10,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:59:10,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:10,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:10,155 INFO L82 PathProgramCache]: Analyzing trace with hash 509214977, now seen corresponding path program 1 times [2020-10-28 12:59:10,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:10,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317040849] [2020-10-28 12:59:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:10,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:10,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:10,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:59:10,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-28 12:59:10,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:10,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:59:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:59:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:59:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:11,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:11,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:11,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:59:11,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:11,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:59:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:59:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:11,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:11,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:11,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:59:11,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:11,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 12:59:11,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:11,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:59:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:59:11,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317040849] [2020-10-28 12:59:11,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:59:11,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:59:11,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200443715] [2020-10-28 12:59:11,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:11,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:11,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:11,416 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-28 12:59:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:21,397 INFO L93 Difference]: Finished difference Result 2049 states and 3017 transitions. [2020-10-28 12:59:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:59:21,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-28 12:59:21,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:21,407 INFO L225 Difference]: With dead ends: 2049 [2020-10-28 12:59:21,408 INFO L226 Difference]: Without dead ends: 1363 [2020-10-28 12:59:21,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:59:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-10-28 12:59:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1337. [2020-10-28 12:59:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-10-28 12:59:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1730 transitions. [2020-10-28 12:59:21,496 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1730 transitions. Word has length 120 [2020-10-28 12:59:21,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:21,498 INFO L481 AbstractCegarLoop]: Abstraction has 1337 states and 1730 transitions. [2020-10-28 12:59:21,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:59:21,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1730 transitions. [2020-10-28 12:59:21,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 12:59:21,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:21,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:21,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:59:21,513 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:21,514 INFO L82 PathProgramCache]: Analyzing trace with hash -682698205, now seen corresponding path program 1 times [2020-10-28 12:59:21,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:21,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876135242] [2020-10-28 12:59:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:21,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:22,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:22,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 12:59:22,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:59:22,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-28 12:59:22,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:22,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:22,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 12:59:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 12:59:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:22,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:22,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:22,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:59:22,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:22,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:22,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:22,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:22,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:59:22,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:22,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:59:22,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:22,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:59:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:59:22,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876135242] [2020-10-28 12:59:22,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:22,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:59:22,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723820297] [2020-10-28 12:59:22,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:59:22,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:22,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:59:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:59:22,727 INFO L87 Difference]: Start difference. First operand 1337 states and 1730 transitions. Second operand 5 states. [2020-10-28 12:59:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:34,234 INFO L93 Difference]: Finished difference Result 3634 states and 4840 transitions. [2020-10-28 12:59:34,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:59:34,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-28 12:59:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:34,249 INFO L225 Difference]: With dead ends: 3634 [2020-10-28 12:59:34,249 INFO L226 Difference]: Without dead ends: 2303 [2020-10-28 12:59:34,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:59:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2020-10-28 12:59:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2287. [2020-10-28 12:59:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-10-28 12:59:34,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2888 transitions. [2020-10-28 12:59:34,349 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2888 transitions. Word has length 146 [2020-10-28 12:59:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:34,350 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 2888 transitions. [2020-10-28 12:59:34,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:59:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2888 transitions. [2020-10-28 12:59:34,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 12:59:34,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:34,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:34,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:59:34,354 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:34,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:34,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2068995471, now seen corresponding path program 1 times [2020-10-28 12:59:34,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:34,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818454461] [2020-10-28 12:59:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:35,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:36,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:36,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 12:59:36,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:59:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2186 [2020-10-28 12:59:36,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:36,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:59:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:59:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 12:59:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:36,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:36,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:36,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:59:36,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:36,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:36,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:36,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:59:36,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:36,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 12:59:37,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-28 12:59:37,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 12:59:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:59:37,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818454461] [2020-10-28 12:59:37,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:59:37,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:59:37,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414932816] [2020-10-28 12:59:37,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:37,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:37,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:37,490 INFO L87 Difference]: Start difference. First operand 2287 states and 2888 transitions. Second operand 7 states. [2020-10-28 12:59:46,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:46,431 INFO L93 Difference]: Finished difference Result 4913 states and 6152 transitions. [2020-10-28 12:59:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:59:46,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-28 12:59:46,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:46,448 INFO L225 Difference]: With dead ends: 4913 [2020-10-28 12:59:46,448 INFO L226 Difference]: Without dead ends: 2632 [2020-10-28 12:59:46,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:59:46,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-10-28 12:59:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2612. [2020-10-28 12:59:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2020-10-28 12:59:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3236 transitions. [2020-10-28 12:59:46,531 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3236 transitions. Word has length 213 [2020-10-28 12:59:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:46,532 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 3236 transitions. [2020-10-28 12:59:46,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:59:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3236 transitions. [2020-10-28 12:59:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-28 12:59:46,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:46,536 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, 2, 2, 2, 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] [2020-10-28 12:59:46,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:59:46,537 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:46,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1317658059, now seen corresponding path program 1 times [2020-10-28 12:59:46,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:46,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608923379] [2020-10-28 12:59:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:46,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:47,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 12:59:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:59:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2424 [2020-10-28 12:59:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:49,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 12:59:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:59:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:49,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:49,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:49,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:59:49,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:49,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:49,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:49,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:49,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:59:49,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:59:49,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:49,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:59:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 12:59:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:49,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:49,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:49,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:59:49,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:59:49,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:49,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:59:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:59:49,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608923379] [2020-10-28 12:59:49,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:49,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:59:49,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623367347] [2020-10-28 12:59:49,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:49,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:49,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:49,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:49,525 INFO L87 Difference]: Start difference. First operand 2612 states and 3236 transitions. Second operand 7 states. [2020-10-28 13:00:00,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:00,480 INFO L93 Difference]: Finished difference Result 5916 states and 7654 transitions. [2020-10-28 13:00:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:00:00,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-28 13:00:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:00,505 INFO L225 Difference]: With dead ends: 5916 [2020-10-28 13:00:00,505 INFO L226 Difference]: Without dead ends: 3617 [2020-10-28 13:00:00,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2020-10-28 13:00:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 3231. [2020-10-28 13:00:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3231 states. [2020-10-28 13:00:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 3798 transitions. [2020-10-28 13:00:00,624 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 3798 transitions. Word has length 216 [2020-10-28 13:00:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:00,624 INFO L481 AbstractCegarLoop]: Abstraction has 3231 states and 3798 transitions. [2020-10-28 13:00:00,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 3798 transitions. [2020-10-28 13:00:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-28 13:00:00,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:00,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:00,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:00:00,629 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:00,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1103779315, now seen corresponding path program 1 times [2020-10-28 13:00:00,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:00,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300774866] [2020-10-28 13:00:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:01,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:01,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-28 13:00:01,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-28 13:00:01,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:01,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-28 13:00:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 13:00:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:01,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:01,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:01,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:01,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:00:01,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:01,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:01,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:01,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 13:00:01,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 13:00:01,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:01,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:01,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:01,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-28 13:00:01,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:01,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300774866] [2020-10-28 13:00:01,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:01,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:00:01,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735789785] [2020-10-28 13:00:01,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:00:01,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:01,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:00:01,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:00:01,891 INFO L87 Difference]: Start difference. First operand 3231 states and 3798 transitions. Second operand 5 states. [2020-10-28 13:00:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:08,891 INFO L93 Difference]: Finished difference Result 6788 states and 8018 transitions. [2020-10-28 13:00:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:00:08,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-10-28 13:00:08,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:08,911 INFO L225 Difference]: With dead ends: 6788 [2020-10-28 13:00:08,911 INFO L226 Difference]: Without dead ends: 3870 [2020-10-28 13:00:08,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:00:08,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2020-10-28 13:00:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3233. [2020-10-28 13:00:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3233 states. [2020-10-28 13:00:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 3801 transitions. [2020-10-28 13:00:09,019 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 3801 transitions. Word has length 231 [2020-10-28 13:00:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:09,021 INFO L481 AbstractCegarLoop]: Abstraction has 3233 states and 3801 transitions. [2020-10-28 13:00:09,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:00:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 3801 transitions. [2020-10-28 13:00:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-28 13:00:09,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:09,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:09,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:00:09,026 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1487860272, now seen corresponding path program 1 times [2020-10-28 13:00:09,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:09,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892942838] [2020-10-28 13:00:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:10,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:10,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-28 13:00:10,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:10,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-10-28 13:00:10,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:10,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:00:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 13:00:10,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:10,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:10,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:10,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:10,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:00:10,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:10,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:10,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:10,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:10,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:00:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-28 13:00:10,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:10,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:00:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:11,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892942838] [2020-10-28 13:00:11,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:11,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:00:11,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729856013] [2020-10-28 13:00:11,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:00:11,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:11,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:00:11,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:00:11,256 INFO L87 Difference]: Start difference. First operand 3233 states and 3801 transitions. Second operand 5 states. [2020-10-28 13:00:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:23,381 INFO L93 Difference]: Finished difference Result 7755 states and 9442 transitions. [2020-10-28 13:00:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:00:23,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-28 13:00:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:23,405 INFO L225 Difference]: With dead ends: 7755 [2020-10-28 13:00:23,405 INFO L226 Difference]: Without dead ends: 4835 [2020-10-28 13:00:23,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:00:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4835 states. [2020-10-28 13:00:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4835 to 4817. [2020-10-28 13:00:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4817 states. [2020-10-28 13:00:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4817 states to 4817 states and 5660 transitions. [2020-10-28 13:00:23,542 INFO L78 Accepts]: Start accepts. Automaton has 4817 states and 5660 transitions. Word has length 288 [2020-10-28 13:00:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:23,543 INFO L481 AbstractCegarLoop]: Abstraction has 4817 states and 5660 transitions. [2020-10-28 13:00:23,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:00:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4817 states and 5660 transitions. [2020-10-28 13:00:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-28 13:00:23,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:23,550 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:23,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:00:23,551 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:23,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1657621550, now seen corresponding path program 1 times [2020-10-28 13:00:23,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:23,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804752709] [2020-10-28 13:00:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:28,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:28,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-28 13:00:28,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:00:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4902 [2020-10-28 13:00:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:28,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:00:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:00:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:28,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:28,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:28,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:00:28,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:28,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:28,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:28,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:28,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:28,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:00:28,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:00:28,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:28,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:00:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:00:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:29,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:29,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:00:29,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:29,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-28 13:00:29,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:29,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:29,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:29,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:29,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:00:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:00:29,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804752709] [2020-10-28 13:00:29,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:29,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:00:29,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520844819] [2020-10-28 13:00:29,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:29,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:29,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:29,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:29,567 INFO L87 Difference]: Start difference. First operand 4817 states and 5660 transitions. Second operand 7 states. [2020-10-28 13:00:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:44,053 INFO L93 Difference]: Finished difference Result 12808 states and 15366 transitions. [2020-10-28 13:00:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:00:44,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-28 13:00:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:44,084 INFO L225 Difference]: With dead ends: 12808 [2020-10-28 13:00:44,084 INFO L226 Difference]: Without dead ends: 7036 [2020-10-28 13:00:44,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7036 states. [2020-10-28 13:00:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7036 to 5787. [2020-10-28 13:00:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5787 states. [2020-10-28 13:00:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 6581 transitions. [2020-10-28 13:00:44,257 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 6581 transitions. Word has length 346 [2020-10-28 13:00:44,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:44,258 INFO L481 AbstractCegarLoop]: Abstraction has 5787 states and 6581 transitions. [2020-10-28 13:00:44,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:44,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 6581 transitions. [2020-10-28 13:00:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-28 13:00:44,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:44,267 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:44,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:00:44,268 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:44,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:44,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1012300135, now seen corresponding path program 1 times [2020-10-28 13:00:44,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:44,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158747399] [2020-10-28 13:00:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:44,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:47,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-28 13:00:47,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:47,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2778 [2020-10-28 13:00:47,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:47,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:00:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:00:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:47,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:47,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:47,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:47,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:47,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:47,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:00:47,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:47,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:47,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:47,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:00:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:47,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:00:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:47,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:47,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:00:47,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:00:47,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:47,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:00:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:00:48,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158747399] [2020-10-28 13:00:48,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:48,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:00:48,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223153007] [2020-10-28 13:00:48,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:00:48,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:48,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:00:48,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:00:48,252 INFO L87 Difference]: Start difference. First operand 5787 states and 6581 transitions. Second operand 8 states. [2020-10-28 13:01:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:02,347 INFO L93 Difference]: Finished difference Result 16068 states and 19049 transitions. [2020-10-28 13:01:02,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:01:02,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 405 [2020-10-28 13:01:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:02,386 INFO L225 Difference]: With dead ends: 16068 [2020-10-28 13:01:02,387 INFO L226 Difference]: Without dead ends: 10594 [2020-10-28 13:01:02,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:01:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10594 states. [2020-10-28 13:01:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10594 to 9316. [2020-10-28 13:01:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9316 states. [2020-10-28 13:01:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9316 states to 9316 states and 10856 transitions. [2020-10-28 13:01:02,631 INFO L78 Accepts]: Start accepts. Automaton has 9316 states and 10856 transitions. Word has length 405 [2020-10-28 13:01:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:02,632 INFO L481 AbstractCegarLoop]: Abstraction has 9316 states and 10856 transitions. [2020-10-28 13:01:02,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:01:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 9316 states and 10856 transitions. [2020-10-28 13:01:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-28 13:01:02,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:02,642 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:02,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:01:02,642 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:02,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1394009675, now seen corresponding path program 1 times [2020-10-28 13:01:02,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:02,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825075199] [2020-10-28 13:01:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:02,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:04,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:04,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-28 13:01:04,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1894 [2020-10-28 13:01:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:04,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 13:01:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-28 13:01:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 13:01:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:04,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:04,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:04,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:04,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:01:04,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:04,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:04,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:05,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:05,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:01:05,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-28 13:01:05,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:05,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-28 13:01:05,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:05,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:01:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:05,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:01:05,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:01:05,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:05,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:01:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:01:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 111 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:01:05,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825075199] [2020-10-28 13:01:05,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:05,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:01:05,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369618315] [2020-10-28 13:01:05,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:01:05,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:05,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:01:05,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:01:05,804 INFO L87 Difference]: Start difference. First operand 9316 states and 10856 transitions. Second operand 8 states. [2020-10-28 13:01:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:22,764 INFO L93 Difference]: Finished difference Result 28161 states and 34569 transitions. [2020-10-28 13:01:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:01:22,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 406 [2020-10-28 13:01:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:22,853 INFO L225 Difference]: With dead ends: 28161 [2020-10-28 13:01:22,853 INFO L226 Difference]: Without dead ends: 18817 [2020-10-28 13:01:22,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:01:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18817 states. [2020-10-28 13:01:23,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18817 to 16210. [2020-10-28 13:01:23,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16210 states. [2020-10-28 13:01:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16210 states to 16210 states and 19381 transitions. [2020-10-28 13:01:23,404 INFO L78 Accepts]: Start accepts. Automaton has 16210 states and 19381 transitions. Word has length 406 [2020-10-28 13:01:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:23,405 INFO L481 AbstractCegarLoop]: Abstraction has 16210 states and 19381 transitions. [2020-10-28 13:01:23,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:01:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 16210 states and 19381 transitions. [2020-10-28 13:01:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-28 13:01:23,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:23,416 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:23,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:01:23,416 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2135546838, now seen corresponding path program 1 times [2020-10-28 13:01:23,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:23,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697670811] [2020-10-28 13:01:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:23,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:26,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:26,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-28 13:01:26,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2730 [2020-10-28 13:01:26,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:26,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:01:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:26,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:26,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:26,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:26,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:26,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:01:26,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:26,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:26,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:26,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:26,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:26,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-28 13:01:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:26,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:26,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:27,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:01:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:27,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:27,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:01:27,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:01:27,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:27,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:01:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:01:28,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697670811] [2020-10-28 13:01:28,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:28,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:01:28,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116877633] [2020-10-28 13:01:28,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:01:28,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:28,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:01:28,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:01:28,094 INFO L87 Difference]: Start difference. First operand 16210 states and 19381 transitions. Second operand 8 states. [2020-10-28 13:01:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:40,230 INFO L93 Difference]: Finished difference Result 33098 states and 39558 transitions. [2020-10-28 13:01:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:01:40,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 436 [2020-10-28 13:01:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:40,283 INFO L225 Difference]: With dead ends: 33098 [2020-10-28 13:01:40,283 INFO L226 Difference]: Without dead ends: 17201 [2020-10-28 13:01:40,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:01:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17201 states. [2020-10-28 13:01:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17201 to 16233. [2020-10-28 13:01:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16233 states. [2020-10-28 13:01:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16233 states to 16233 states and 19410 transitions. [2020-10-28 13:01:40,730 INFO L78 Accepts]: Start accepts. Automaton has 16233 states and 19410 transitions. Word has length 436 [2020-10-28 13:01:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:40,732 INFO L481 AbstractCegarLoop]: Abstraction has 16233 states and 19410 transitions. [2020-10-28 13:01:40,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:01:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 16233 states and 19410 transitions. [2020-10-28 13:01:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-28 13:01:40,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:40,745 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:40,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:01:40,746 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:40,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash -60730146, now seen corresponding path program 1 times [2020-10-28 13:01:40,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:40,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360792164] [2020-10-28 13:01:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:40,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:41,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:41,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-28 13:01:41,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-10-28 13:01:41,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:41,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:01:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 13:01:41,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:42,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:42,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:42,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:42,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:01:42,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:42,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:42,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:42,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:01:42,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:42,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:01:42,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:42,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:42,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:01:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:42,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:42,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:01:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:01:42,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360792164] [2020-10-28 13:01:42,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:42,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:01:42,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599396276] [2020-10-28 13:01:42,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:01:42,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:42,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:01:42,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:01:42,596 INFO L87 Difference]: Start difference. First operand 16233 states and 19410 transitions. Second operand 5 states. [2020-10-28 13:01:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:54,446 INFO L93 Difference]: Finished difference Result 38821 states and 47596 transitions. [2020-10-28 13:01:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:01:54,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 448 [2020-10-28 13:01:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:54,521 INFO L225 Difference]: With dead ends: 38821 [2020-10-28 13:01:54,522 INFO L226 Difference]: Without dead ends: 22901 [2020-10-28 13:01:54,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:01:54,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22901 states. [2020-10-28 13:01:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22901 to 22885. [2020-10-28 13:01:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22885 states. [2020-10-28 13:01:55,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22885 states to 22885 states and 28154 transitions. [2020-10-28 13:01:55,021 INFO L78 Accepts]: Start accepts. Automaton has 22885 states and 28154 transitions. Word has length 448 [2020-10-28 13:01:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:55,022 INFO L481 AbstractCegarLoop]: Abstraction has 22885 states and 28154 transitions. [2020-10-28 13:01:55,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:01:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 22885 states and 28154 transitions. [2020-10-28 13:01:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-28 13:01:55,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:55,029 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:55,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:01:55,030 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:55,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:55,030 INFO L82 PathProgramCache]: Analyzing trace with hash -670577957, now seen corresponding path program 1 times [2020-10-28 13:01:55,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:55,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216015696] [2020-10-28 13:01:55,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:00,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-28 13:02:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:02:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:02:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:00,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:02:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:02:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:00,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:00,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:00,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:00,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:02:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:00,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:00,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:00,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:02:00,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:02:00,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:00,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:02:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:02:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:01,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:01,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:02:01,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:01,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-28 13:02:01,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:01,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:02:01,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:02:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:02:01,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216015696] [2020-10-28 13:02:01,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:01,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:02:01,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146491108] [2020-10-28 13:02:01,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:02:01,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:01,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:02:01,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:02:01,818 INFO L87 Difference]: Start difference. First operand 22885 states and 28154 transitions. Second operand 8 states. [2020-10-28 13:02:01,981 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:02:06,818 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:02:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:16,497 INFO L93 Difference]: Finished difference Result 48894 states and 59898 transitions. [2020-10-28 13:02:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:02:16,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 488 [2020-10-28 13:02:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:16,593 INFO L225 Difference]: With dead ends: 48894 [2020-10-28 13:02:16,593 INFO L226 Difference]: Without dead ends: 25684 [2020-10-28 13:02:16,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:02:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25684 states. [2020-10-28 13:02:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25684 to 23182. [2020-10-28 13:02:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23182 states. [2020-10-28 13:02:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23182 states to 23182 states and 28374 transitions. [2020-10-28 13:02:17,139 INFO L78 Accepts]: Start accepts. Automaton has 23182 states and 28374 transitions. Word has length 488 [2020-10-28 13:02:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:17,140 INFO L481 AbstractCegarLoop]: Abstraction has 23182 states and 28374 transitions. [2020-10-28 13:02:17,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:02:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 23182 states and 28374 transitions. [2020-10-28 13:02:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-28 13:02:17,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:17,147 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:17,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:02:17,147 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:17,148 INFO L82 PathProgramCache]: Analyzing trace with hash 355000362, now seen corresponding path program 1 times [2020-10-28 13:02:17,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:17,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128222138] [2020-10-28 13:02:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3342 [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:02:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:20,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:20,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:20,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:20,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:02:20,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:20,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:20,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:20,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:21,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:21,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:21,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:21,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:21,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:02:21,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:21,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:21,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:21,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:21,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:21,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:02:21,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:02:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 13:02:21,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:21,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:02:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 265 proven. 5 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:02:21,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128222138] [2020-10-28 13:02:21,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:21,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:02:21,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642333171] [2020-10-28 13:02:21,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:02:21,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:21,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:02:21,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:02:21,779 INFO L87 Difference]: Start difference. First operand 23182 states and 28374 transitions. Second operand 6 states. [2020-10-28 13:02:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:32,913 INFO L93 Difference]: Finished difference Result 47018 states and 57537 transitions. [2020-10-28 13:02:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 13:02:32,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 520 [2020-10-28 13:02:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:32,998 INFO L225 Difference]: With dead ends: 47018 [2020-10-28 13:02:32,998 INFO L226 Difference]: Without dead ends: 23514 [2020-10-28 13:02:33,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:33,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23514 states. [2020-10-28 13:02:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23514 to 23480. [2020-10-28 13:02:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23480 states. [2020-10-28 13:02:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23480 states to 23480 states and 27634 transitions. [2020-10-28 13:02:33,563 INFO L78 Accepts]: Start accepts. Automaton has 23480 states and 27634 transitions. Word has length 520 [2020-10-28 13:02:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:33,564 INFO L481 AbstractCegarLoop]: Abstraction has 23480 states and 27634 transitions. [2020-10-28 13:02:33,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:02:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 23480 states and 27634 transitions. [2020-10-28 13:02:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-28 13:02:33,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:33,571 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:33,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:02:33,571 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2086259961, now seen corresponding path program 1 times [2020-10-28 13:02:33,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:33,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491728154] [2020-10-28 13:02:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:33,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:35,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:35,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-28 13:02:35,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:02:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-28 13:02:35,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:35,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 13:02:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-28 13:02:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-28 13:02:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:36,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:36,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:36,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:36,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:02:36,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:36,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:36,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:36,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:36,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-28 13:02:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:37,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-28 13:02:37,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:37,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:02:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:02:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:02:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:37,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:37,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:37,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 13:02:37,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:02:37,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:37,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:02:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:02:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 232 proven. 93 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 13:02:37,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491728154] [2020-10-28 13:02:37,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:37,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 13:02:37,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026120326] [2020-10-28 13:02:37,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 13:02:37,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:37,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 13:02:37,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:02:37,650 INFO L87 Difference]: Start difference. First operand 23480 states and 27634 transitions. Second operand 10 states. [2020-10-28 13:02:37,908 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63