/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:03:05,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:03:05,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:03:05,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:03:05,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:03:05,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:03:05,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:03:05,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:03:05,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:03:05,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:03:05,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:03:05,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:03:05,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:03:05,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:03:05,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:03:05,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:03:05,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:03:05,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:03:05,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:03:05,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:03:05,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:03:05,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:03:05,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:03:05,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:03:05,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:03:05,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:03:05,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:03:05,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:03:05,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:03:05,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:03:05,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:03:05,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:03:05,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:03:05,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:03:05,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:03:05,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:03:05,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:03:05,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:03:05,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:03:05,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:03:05,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:03:05,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:03:05,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:03:05,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:03:05,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:03:05,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:03:05,925 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:03:05,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:03:05,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:03:05,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:03:05,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:03:05,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:03:05,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:03:05,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:03:05,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:03:05,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:03:05,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:03:05,929 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:03:05,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:03:05,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:03:05,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:03:05,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:03:05,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:03:05,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:03:05,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:03:05,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:03:05,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:03:05,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:03:05,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:03:05,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:03:05,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:03:05,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:03:06,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:03:06,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:03:06,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:03:06,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:03:06,410 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:03:06,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label32.c [2020-10-29 08:03:06,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c1bdea25/df74ba9de7eb4953a5d0bdb176129b4e/FLAG7cac96022 [2020-10-29 08:03:07,452 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:03:07,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label32.c [2020-10-29 08:03:07,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c1bdea25/df74ba9de7eb4953a5d0bdb176129b4e/FLAG7cac96022 [2020-10-29 08:03:07,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c1bdea25/df74ba9de7eb4953a5d0bdb176129b4e [2020-10-29 08:03:07,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:03:07,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:03:07,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:03:07,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:03:07,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:03:07,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:03:07" (1/1) ... [2020-10-29 08:03:07,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3021ffb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:07, skipping insertion in model container [2020-10-29 08:03:07,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:03:07" (1/1) ... [2020-10-29 08:03:07,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:03:07,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:03:08,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:03:08,408 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:03:08,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:03:08,688 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:03:08,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08 WrapperNode [2020-10-29 08:03:08,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:03:08,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:03:08,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:03:08,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:03:08,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (1/1) ... [2020-10-29 08:03:08,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (1/1) ... [2020-10-29 08:03:08,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (1/1) ... [2020-10-29 08:03:08,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (1/1) ... [2020-10-29 08:03:08,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (1/1) ... [2020-10-29 08:03:08,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (1/1) ... [2020-10-29 08:03:08,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (1/1) ... [2020-10-29 08:03:08,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:03:08,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:03:08,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:03:08,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:03:08,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:03:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:03:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:03:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:03:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:03:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:03:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:03:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:03:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:03:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:03:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:03:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:03:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:03:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:03:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:03:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:03:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:03:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:03:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:03:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:03:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:03:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:03:12,021 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:03:12,021 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:03:12,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:03:12 BoogieIcfgContainer [2020-10-29 08:03:12,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:03:12,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:03:12,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:03:12,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:03:12,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:03:07" (1/3) ... [2020-10-29 08:03:12,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1935f6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:03:12, skipping insertion in model container [2020-10-29 08:03:12,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:03:08" (2/3) ... [2020-10-29 08:03:12,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1935f6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:03:12, skipping insertion in model container [2020-10-29 08:03:12,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:03:12" (3/3) ... [2020-10-29 08:03:12,034 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label32.c [2020-10-29 08:03:12,047 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:03:12,054 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:03:12,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:03:12,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:03:12,101 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:03:12,101 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:03:12,101 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:03:12,101 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:03:12,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:03:12,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:03:12,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:03:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 08:03:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 08:03:12,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:12,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:12,143 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:12,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:12,150 INFO L82 PathProgramCache]: Analyzing trace with hash 702483508, now seen corresponding path program 1 times [2020-10-29 08:03:12,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:12,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489944114] [2020-10-29 08:03:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:13,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:13,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 08:03:13,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-29 08:03:13,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:13,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:03:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:03:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 08:03:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:03:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:13,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:13,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:13,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:13,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:03:13,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:13,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:03:13,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:03:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:03:13,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489944114] [2020-10-29 08:03:13,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:03:13,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:03:13,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312461414] [2020-10-29 08:03:13,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:03:13,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:13,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:03:13,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:03:13,390 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-29 08:03:22,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:22,529 INFO L93 Difference]: Finished difference Result 1520 states and 2854 transitions. [2020-10-29 08:03:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:03:22,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-29 08:03:22,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:22,562 INFO L225 Difference]: With dead ends: 1520 [2020-10-29 08:03:22,562 INFO L226 Difference]: Without dead ends: 1039 [2020-10-29 08:03:22,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-29 08:03:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-29 08:03:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-29 08:03:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1643 transitions. [2020-10-29 08:03:22,743 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1643 transitions. Word has length 55 [2020-10-29 08:03:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:22,745 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1643 transitions. [2020-10-29 08:03:22,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:03:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1643 transitions. [2020-10-29 08:03:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 08:03:22,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:22,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:22,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:03:22,768 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:22,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1673601324, now seen corresponding path program 1 times [2020-10-29 08:03:22,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:22,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746000735] [2020-10-29 08:03:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:27,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:27,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 08:03:27,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:03:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 08:03:27,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:27,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:03:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:03:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:03:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:03:28,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:28,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:28,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:28,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:03:28,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:28,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:03:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:28,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:28,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:03:28,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:28,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 08:03:28,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:28,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:03:28,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:28,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 08:03:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:28,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:28,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:03:28,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:28,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 08:03:28,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:28,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:03:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:03:28,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746000735] [2020-10-29 08:03:28,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:28,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:28,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040880455] [2020-10-29 08:03:28,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:28,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:28,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:28,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:28,814 INFO L87 Difference]: Start difference. First operand 1032 states and 1643 transitions. Second operand 7 states. [2020-10-29 08:03:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:35,513 INFO L93 Difference]: Finished difference Result 2763 states and 4508 transitions. [2020-10-29 08:03:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:03:35,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-29 08:03:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:35,530 INFO L225 Difference]: With dead ends: 2763 [2020-10-29 08:03:35,530 INFO L226 Difference]: Without dead ends: 1737 [2020-10-29 08:03:35,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:03:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2020-10-29 08:03:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1728. [2020-10-29 08:03:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-10-29 08:03:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2599 transitions. [2020-10-29 08:03:35,616 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2599 transitions. Word has length 237 [2020-10-29 08:03:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:35,617 INFO L481 AbstractCegarLoop]: Abstraction has 1728 states and 2599 transitions. [2020-10-29 08:03:35,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2599 transitions. [2020-10-29 08:03:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-29 08:03:35,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:35,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:03:35,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:03:35,625 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:35,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1316466820, now seen corresponding path program 1 times [2020-10-29 08:03:35,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:35,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557503168] [2020-10-29 08:03:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:36,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:40,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:40,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 08:03:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:03:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 08:03:40,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:40,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-29 08:03:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:03:40,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:40,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:40,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:40,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:40,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:40,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:03:40,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:40,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:40,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:03:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 08:03:40,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:40,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:03:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-10-29 08:03:41,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:03:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:41,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:03:41,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 08:03:41,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:41,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:03:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:03:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:03:41,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557503168] [2020-10-29 08:03:41,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:41,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:03:41,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625483830] [2020-10-29 08:03:41,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:03:41,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:41,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:03:41,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:03:41,507 INFO L87 Difference]: Start difference. First operand 1728 states and 2599 transitions. Second operand 8 states. [2020-10-29 08:03:41,666 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:03:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:51,249 INFO L93 Difference]: Finished difference Result 4169 states and 6296 transitions. [2020-10-29 08:03:51,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:03:51,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 277 [2020-10-29 08:03:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:51,264 INFO L225 Difference]: With dead ends: 4169 [2020-10-29 08:03:51,265 INFO L226 Difference]: Without dead ends: 2095 [2020-10-29 08:03:51,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:03:51,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2020-10-29 08:03:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2081. [2020-10-29 08:03:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2020-10-29 08:03:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2383 transitions. [2020-10-29 08:03:51,336 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2383 transitions. Word has length 277 [2020-10-29 08:03:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:51,336 INFO L481 AbstractCegarLoop]: Abstraction has 2081 states and 2383 transitions. [2020-10-29 08:03:51,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:03:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2383 transitions. [2020-10-29 08:03:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 08:03:51,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:51,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:03:51,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:03:51,342 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash -785207134, now seen corresponding path program 1 times [2020-10-29 08:03:51,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:51,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62667571] [2020-10-29 08:03:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:51,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 08:03:56,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:03:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 08:03:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:56,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:03:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-29 08:03:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 08:03:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:56,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:56,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:56,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:56,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:56,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:56,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:03:56,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:56,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:56,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:56,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:03:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 08:03:56,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:56,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:03:56,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:03:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:57,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:57,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:57,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 08:03:57,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:57,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:03:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 08:03:57,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62667571] [2020-10-29 08:03:57,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:57,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:03:57,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938417524] [2020-10-29 08:03:57,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:03:57,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:57,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:03:57,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:03:57,149 INFO L87 Difference]: Start difference. First operand 2081 states and 2383 transitions. Second operand 5 states. [2020-10-29 08:04:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:01,400 INFO L93 Difference]: Finished difference Result 4170 states and 4781 transitions. [2020-10-29 08:04:01,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:04:01,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-29 08:04:01,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:01,421 INFO L225 Difference]: With dead ends: 4170 [2020-10-29 08:04:01,422 INFO L226 Difference]: Without dead ends: 2095 [2020-10-29 08:04:01,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:04:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2020-10-29 08:04:01,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2081. [2020-10-29 08:04:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2020-10-29 08:04:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2308 transitions. [2020-10-29 08:04:01,505 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2308 transitions. Word has length 280 [2020-10-29 08:04:01,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:01,506 INFO L481 AbstractCegarLoop]: Abstraction has 2081 states and 2308 transitions. [2020-10-29 08:04:01,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:04:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2308 transitions. [2020-10-29 08:04:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-29 08:04:01,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:01,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:04:01,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:04:01,517 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1381930115, now seen corresponding path program 1 times [2020-10-29 08:04:01,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:01,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598193867] [2020-10-29 08:04:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:06,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:06,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-29 08:04:06,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:04:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 08:04:06,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:06,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-29 08:04:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:04:06,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:06,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:06,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:04:06,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:06,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:06,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:06,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:06,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:04:06,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:06,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:04:06,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:06,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:04:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:04:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:04:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:07,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:07,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:07,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:07,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 08:04:07,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:07,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:07,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 08:04:07,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:04:07,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-29 08:04:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:07,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:07,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:04:07,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 08:04:07,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:07,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:07,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 08:04:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:04:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 252 proven. 109 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 08:04:07,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598193867] [2020-10-29 08:04:07,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:07,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:07,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448739432] [2020-10-29 08:04:07,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:07,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:07,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:07,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:07,646 INFO L87 Difference]: Start difference. First operand 2081 states and 2308 transitions. Second operand 7 states. [2020-10-29 08:04:08,495 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 08:04:09,247 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:04:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:15,593 INFO L93 Difference]: Finished difference Result 5955 states and 6778 transitions. [2020-10-29 08:04:15,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:04:15,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 404 [2020-10-29 08:04:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:15,623 INFO L225 Difference]: With dead ends: 5955 [2020-10-29 08:04:15,624 INFO L226 Difference]: Without dead ends: 3880 [2020-10-29 08:04:15,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:04:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2020-10-29 08:04:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3472. [2020-10-29 08:04:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3472 states. [2020-10-29 08:04:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 3779 transitions. [2020-10-29 08:04:15,746 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 3779 transitions. Word has length 404 [2020-10-29 08:04:15,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:15,747 INFO L481 AbstractCegarLoop]: Abstraction has 3472 states and 3779 transitions. [2020-10-29 08:04:15,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 3779 transitions. [2020-10-29 08:04:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-29 08:04:15,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:15,761 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:04:15,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:04:15,762 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:15,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1243097437, now seen corresponding path program 1 times [2020-10-29 08:04:15,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:15,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572472571] [2020-10-29 08:04:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:15,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:16,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:20,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:20,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-29 08:04:20,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:04:20,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 08:04:20,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:20,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:20,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-29 08:04:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:04:20,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:21,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:21,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:21,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:21,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:21,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:04:21,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:21,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:21,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:21,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:21,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 08:04:21,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:21,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 08:04:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:21,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 08:04:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:21,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:21,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:21,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 08:04:21,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:21,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 08:04:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-29 08:04:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:21,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:21,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:04:21,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:21,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:04:21,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:21,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 08:04:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 252 proven. 109 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-29 08:04:21,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572472571] [2020-10-29 08:04:21,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:21,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:04:21,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677645605] [2020-10-29 08:04:21,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:04:21,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:21,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:04:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:04:21,816 INFO L87 Difference]: Start difference. First operand 3472 states and 3779 transitions. Second operand 8 states. [2020-10-29 08:04:23,167 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:04:26,393 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:04:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:31,574 INFO L93 Difference]: Finished difference Result 8733 states and 9784 transitions. [2020-10-29 08:04:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:04:31,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 433 [2020-10-29 08:04:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:31,604 INFO L225 Difference]: With dead ends: 8733 [2020-10-29 08:04:31,604 INFO L226 Difference]: Without dead ends: 5608 [2020-10-29 08:04:31,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:04:31,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5608 states. [2020-10-29 08:04:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5608 to 5184. [2020-10-29 08:04:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5184 states. [2020-10-29 08:04:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 5605 transitions. [2020-10-29 08:04:31,746 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 5605 transitions. Word has length 433 [2020-10-29 08:04:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:31,747 INFO L481 AbstractCegarLoop]: Abstraction has 5184 states and 5605 transitions. [2020-10-29 08:04:31,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:04:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 5605 transitions. [2020-10-29 08:04:31,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-29 08:04:31,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:31,766 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:04:31,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:04:31,766 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:31,767 INFO L82 PathProgramCache]: Analyzing trace with hash 576718115, now seen corresponding path program 1 times [2020-10-29 08:04:31,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:31,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448947551] [2020-10-29 08:04:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:36,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:36,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-29 08:04:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:04:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 08:04:36,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:36,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:04:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:04:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 08:04:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:37,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:37,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:37,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:04:37,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:37,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:04:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:37,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:37,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:37,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:04:37,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 08:04:37,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:37,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 08:04:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:37,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 08:04:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:37,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:37,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:37,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:37,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 08:04:37,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:37,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-29 08:04:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:37,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:37,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:37,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:04:37,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:04:37,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:37,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 08:04:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 141 proven. 224 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-29 08:04:37,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448947551] [2020-10-29 08:04:37,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:37,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:37,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68410973] [2020-10-29 08:04:37,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:37,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:37,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:37,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:37,794 INFO L87 Difference]: Start difference. First operand 5184 states and 5605 transitions. Second operand 7 states. [2020-10-29 08:04:42,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:42,332 INFO L93 Difference]: Finished difference Result 10731 states and 11665 transitions. [2020-10-29 08:04:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:04:42,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 484 [2020-10-29 08:04:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:42,357 INFO L225 Difference]: With dead ends: 10731 [2020-10-29 08:04:42,357 INFO L226 Difference]: Without dead ends: 5557 [2020-10-29 08:04:42,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:04:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2020-10-29 08:04:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 5185. [2020-10-29 08:04:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5185 states. [2020-10-29 08:04:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 5552 transitions. [2020-10-29 08:04:42,497 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 5552 transitions. Word has length 484 [2020-10-29 08:04:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:42,498 INFO L481 AbstractCegarLoop]: Abstraction has 5185 states and 5552 transitions. [2020-10-29 08:04:42,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 5552 transitions. [2020-10-29 08:04:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-10-29 08:04:42,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:42,510 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 08:04:42,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:04:42,510 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1847300670, now seen corresponding path program 1 times [2020-10-29 08:04:42,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:42,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766379092] [2020-10-29 08:04:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 631 [2020-10-29 08:04:47,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:04:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 08:04:47,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-29 08:04:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 08:04:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:47,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:04:47,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:04:47,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:04:47,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 08:04:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:04:47,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:04:47,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:47,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-10-29 08:04:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:48,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:48,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:48,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:04:48,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:48,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:04:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-29 08:04:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:48,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:48,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 08:04:48,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 08:04:48,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:48,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:04:48,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:04:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-29 08:04:48,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766379092] [2020-10-29 08:04:48,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:48,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:48,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481585389] [2020-10-29 08:04:48,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:48,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:48,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:48,951 INFO L87 Difference]: Start difference. First operand 5185 states and 5552 transitions. Second operand 7 states. [2020-10-29 08:04:49,092 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 08:04:53,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:53,938 INFO L93 Difference]: Finished difference Result 13121 states and 14239 transitions. [2020-10-29 08:04:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:04:53,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 613 [2020-10-29 08:04:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:53,972 INFO L225 Difference]: With dead ends: 13121 [2020-10-29 08:04:53,972 INFO L226 Difference]: Without dead ends: 7942 [2020-10-29 08:04:53,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:04:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7942 states. [2020-10-29 08:04:54,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7942 to 7579. [2020-10-29 08:04:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7579 states. [2020-10-29 08:04:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7579 states to 7579 states and 8106 transitions. [2020-10-29 08:04:54,152 INFO L78 Accepts]: Start accepts. Automaton has 7579 states and 8106 transitions. Word has length 613 [2020-10-29 08:04:54,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:54,152 INFO L481 AbstractCegarLoop]: Abstraction has 7579 states and 8106 transitions. [2020-10-29 08:04:54,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7579 states and 8106 transitions. [2020-10-29 08:04:54,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-29 08:04:54,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:54,174 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:04:54,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:04:54,175 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:54,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1622961920, now seen corresponding path program 1 times [2020-10-29 08:04:54,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:54,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955240254] [2020-10-29 08:04:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:59,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:59,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-29 08:04:59,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:04:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 08:04:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:59,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 456 [2020-10-29 08:04:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:04:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:59,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:59,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:59,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:59,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:59,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:04:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:59,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:59,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:59,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:04:59,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:04:59,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:59,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:04:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:59,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:04:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-29 08:05:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:00,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:00,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:00,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:00,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-29 08:05:00,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:00,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:05:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-29 08:05:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:00,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 08:05:00,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:00,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:05:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:00,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-29 08:05:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 639 proven. 172 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-29 08:05:01,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955240254] [2020-10-29 08:05:01,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:01,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:01,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477009429] [2020-10-29 08:05:01,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:01,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:01,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:01,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:01,619 INFO L87 Difference]: Start difference. First operand 7579 states and 8106 transitions. Second operand 7 states. [2020-10-29 08:05:04,121 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 08:05:04,340 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 08:05:06,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:06,735 INFO L93 Difference]: Finished difference Result 15174 states and 16240 transitions. [2020-10-29 08:05:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:05:06,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 945 [2020-10-29 08:05:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:06,760 INFO L225 Difference]: With dead ends: 15174 [2020-10-29 08:05:06,760 INFO L226 Difference]: Without dead ends: 7601 [2020-10-29 08:05:06,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:05:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2020-10-29 08:05:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 7581. [2020-10-29 08:05:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7581 states. [2020-10-29 08:05:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7581 states to 7581 states and 8101 transitions. [2020-10-29 08:05:06,924 INFO L78 Accepts]: Start accepts. Automaton has 7581 states and 8101 transitions. Word has length 945 [2020-10-29 08:05:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:06,926 INFO L481 AbstractCegarLoop]: Abstraction has 7581 states and 8101 transitions. [2020-10-29 08:05:06,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7581 states and 8101 transitions. [2020-10-29 08:05:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-29 08:05:06,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:06,948 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:05:06,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:05:06,948 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:06,949 INFO L82 PathProgramCache]: Analyzing trace with hash -302258291, now seen corresponding path program 1 times [2020-10-29 08:05:06,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:06,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623020751] [2020-10-29 08:05:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:07,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:07,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-29 08:05:12,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:05:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 08:05:12,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-29 08:05:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:05:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:12,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:05:12,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:12,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:05:12,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:05:12,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:05:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:05:12,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:05:12,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:12,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:12,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:05:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:05:12,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 08:05:12,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 08:05:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:05:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:13,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:13,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:13,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:13,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 08:05:13,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:13,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:05:13,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2020-10-29 08:05:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:13,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:13,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 08:05:13,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:13,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 08:05:13,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:13,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-29 08:05:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:13,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 710 proven. 172 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2020-10-29 08:05:14,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623020751] [2020-10-29 08:05:14,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:14,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:14,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110758680] [2020-10-29 08:05:14,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:14,198 INFO L87 Difference]: Start difference. First operand 7581 states and 8101 transitions. Second operand 7 states. [2020-10-29 08:05:15,926 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:05:17,990 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 08:05:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:21,353 INFO L93 Difference]: Finished difference Result 15858 states and 16949 transitions. [2020-10-29 08:05:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:05:21,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 963 [2020-10-29 08:05:21,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:21,383 INFO L225 Difference]: With dead ends: 15858 [2020-10-29 08:05:21,383 INFO L226 Difference]: Without dead ends: 8283 [2020-10-29 08:05:21,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:05:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2020-10-29 08:05:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 7924. [2020-10-29 08:05:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2020-10-29 08:05:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 8440 transitions. [2020-10-29 08:05:21,553 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 8440 transitions. Word has length 963 [2020-10-29 08:05:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:21,554 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 8440 transitions. [2020-10-29 08:05:21,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 8440 transitions. [2020-10-29 08:05:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2020-10-29 08:05:21,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:21,580 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:05:21,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:05:21,581 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash -478365294, now seen corresponding path program 1 times [2020-10-29 08:05:21,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:21,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884845444] [2020-10-29 08:05:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:21,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:22,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:26,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:26,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-29 08:05:26,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:05:26,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-29 08:05:26,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:26,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 620 [2020-10-29 08:05:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:05:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:27,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:27,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:27,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:05:27,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:27,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:27,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:27,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:27,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:05:27,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 08:05:27,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:27,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:05:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:05:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:05:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:27,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:27,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:05:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:27,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:27,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:05:27,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:05:27,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:27,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:27,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:05:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:27,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:27,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:05:27,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:05:27,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:27,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 08:05:27,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:27,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-10-29 08:05:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:28,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:28,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:28,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-29 08:05:28,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:28,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:05:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 885 [2020-10-29 08:05:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:28,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:28,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:28,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 08:05:28,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 08:05:28,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:28,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-29 08:05:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2222 backedges. 905 proven. 172 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2020-10-29 08:05:29,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884845444] [2020-10-29 08:05:29,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:29,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:29,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095650673] [2020-10-29 08:05:29,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:29,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:29,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:29,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:29,566 INFO L87 Difference]: Start difference. First operand 7924 states and 8440 transitions. Second operand 7 states. [2020-10-29 08:05:31,986 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:05:32,259 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:05:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:34,744 INFO L93 Difference]: Finished difference Result 16211 states and 17305 transitions. [2020-10-29 08:05:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:05:34,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1105 [2020-10-29 08:05:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:34,764 INFO L225 Difference]: With dead ends: 16211 [2020-10-29 08:05:34,765 INFO L226 Difference]: Without dead ends: 8293 [2020-10-29 08:05:34,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:05:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8293 states. [2020-10-29 08:05:34,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8293 to 8267. [2020-10-29 08:05:34,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8267 states. [2020-10-29 08:05:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8267 states to 8267 states and 8785 transitions. [2020-10-29 08:05:34,944 INFO L78 Accepts]: Start accepts. Automaton has 8267 states and 8785 transitions. Word has length 1105 [2020-10-29 08:05:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:34,945 INFO L481 AbstractCegarLoop]: Abstraction has 8267 states and 8785 transitions. [2020-10-29 08:05:34,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:34,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8267 states and 8785 transitions. [2020-10-29 08:05:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-29 08:05:34,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:34,972 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:05:34,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:05:34,973 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:34,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1482550558, now seen corresponding path program 1 times [2020-10-29 08:05:34,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:34,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049714403] [2020-10-29 08:05:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:35,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1144 [2020-10-29 08:05:40,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:05:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 08:05:40,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-29 08:05:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:05:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:05:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:05:40,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:05:40,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:05:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:05:40,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:05:40,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:05:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:05:40,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:05:40,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-29 08:05:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:40,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:40,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 08:05:40,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:05:40,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:40,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 08:05:40,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2020-10-29 08:05:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:41,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-29 08:05:41,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:41,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:05:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 902 [2020-10-29 08:05:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:41,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 922 proven. 172 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2020-10-29 08:05:42,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049714403] [2020-10-29 08:05:42,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:42,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:42,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92200104] [2020-10-29 08:05:42,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:42,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:42,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:42,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:42,354 INFO L87 Difference]: Start difference. First operand 8267 states and 8785 transitions. Second operand 7 states. [2020-10-29 08:05:46,232 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 08:05:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:48,198 INFO L93 Difference]: Finished difference Result 19264 states and 20617 transitions. [2020-10-29 08:05:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:05:48,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1122 [2020-10-29 08:05:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:48,233 INFO L225 Difference]: With dead ends: 19264 [2020-10-29 08:05:48,233 INFO L226 Difference]: Without dead ends: 11003 [2020-10-29 08:05:48,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:05:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11003 states. [2020-10-29 08:05:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11003 to 10993. [2020-10-29 08:05:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10993 states. [2020-10-29 08:05:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10993 states to 10993 states and 11748 transitions. [2020-10-29 08:05:48,461 INFO L78 Accepts]: Start accepts. Automaton has 10993 states and 11748 transitions. Word has length 1122 [2020-10-29 08:05:48,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:48,462 INFO L481 AbstractCegarLoop]: Abstraction has 10993 states and 11748 transitions. [2020-10-29 08:05:48,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 10993 states and 11748 transitions. [2020-10-29 08:05:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1177 [2020-10-29 08:05:48,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:48,497 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2020-10-29 08:05:48,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:05:48,498 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:48,499 INFO L82 PathProgramCache]: Analyzing trace with hash -997405605, now seen corresponding path program 1 times [2020-10-29 08:05:48,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:48,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900589307] [2020-10-29 08:05:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:53,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:53,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1200 [2020-10-29 08:05:53,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:05:53,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-29 08:05:53,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:53,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:53,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:53,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 447 [2020-10-29 08:05:53,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 08:05:53,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:54,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:05:54,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:54,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:05:54,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:54,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:54,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:05:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:05:54,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:05:54,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:05:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:05:54,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:05:54,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:05:54,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:54,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-29 08:05:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 08:05:54,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 08:05:54,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-29 08:05:54,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2020-10-29 08:05:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:05:54,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:54,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:05:54,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:05:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:54,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2020-10-29 08:05:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:05:54,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 08:05:54,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:05:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:54,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 954 [2020-10-29 08:05:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 08:05:54,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:05:54,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-29 08:05:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2869 backedges. 738 proven. 466 refuted. 0 times theorem prover too weak. 1665 trivial. 0 not checked. [2020-10-29 08:05:55,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900589307] [2020-10-29 08:05:55,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:55,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:55,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138860683] [2020-10-29 08:05:55,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:55,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:55,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:55,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:55,775 INFO L87 Difference]: Start difference. First operand 10993 states and 11748 transitions. Second operand 7 states. [2020-10-29 08:05:58,718 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 08:06:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:06:01,923 INFO L93 Difference]: Finished difference Result 24185 states and 26393 transitions. [2020-10-29 08:06:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:06:01,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1176 [2020-10-29 08:06:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:06:01,962 INFO L225 Difference]: With dead ends: 24185 [2020-10-29 08:06:01,962 INFO L226 Difference]: Without dead ends: 13535 [2020-10-29 08:06:01,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:06:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13535 states. [2020-10-29 08:06:02,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13535 to 13373. [2020-10-29 08:06:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13373 states. [2020-10-29 08:06:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13373 states to 13373 states and 14249 transitions. [2020-10-29 08:06:02,261 INFO L78 Accepts]: Start accepts. Automaton has 13373 states and 14249 transitions. Word has length 1176 [2020-10-29 08:06:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:06:02,262 INFO L481 AbstractCegarLoop]: Abstraction has 13373 states and 14249 transitions. [2020-10-29 08:06:02,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:06:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13373 states and 14249 transitions. [2020-10-29 08:06:02,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1185 [2020-10-29 08:06:02,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:06:02,297 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:06:02,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 08:06:02,298 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:06:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:06:02,298 INFO L82 PathProgramCache]: Analyzing trace with hash 489239386, now seen corresponding path program 1 times [2020-10-29 08:06:02,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:06:02,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858716101] [2020-10-29 08:06:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:06:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:02,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:02,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:07,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:07,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1206 [2020-10-29 08:06:07,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:06:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-29 08:06:07,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:07,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 447 [2020-10-29 08:06:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 08:06:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:06:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:07,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:06:07,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:06:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:07,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:06:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:08,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:08,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:06:08,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 08:06:08,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:08,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:06:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:08,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:06:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:08,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:06:08,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-29 08:06:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:08,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:08,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:08,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 08:06:08,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 08:06:08,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:08,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:06:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-29 08:06:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:08,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2020-10-29 08:06:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:08,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:08,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:08,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:06:08,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:06:08,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:08,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-29 08:06:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:08,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-29 08:06:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:09,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:09,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 08:06:09,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:09,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:06:09,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:09,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-29 08:06:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:09,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2354 backedges. 740 proven. 419 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2020-10-29 08:06:10,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858716101] [2020-10-29 08:06:10,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:06:10,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:06:10,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268380937] [2020-10-29 08:06:10,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:06:10,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:06:10,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:06:10,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:06:10,200 INFO L87 Difference]: Start difference. First operand 13373 states and 14249 transitions. Second operand 7 states. [2020-10-29 08:06:13,038 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 08:06:13,386 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:06:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:06:16,144 INFO L93 Difference]: Finished difference Result 26561 states and 28746 transitions. [2020-10-29 08:06:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:06:16,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1184 [2020-10-29 08:06:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:06:16,181 INFO L225 Difference]: With dead ends: 26561 [2020-10-29 08:06:16,181 INFO L226 Difference]: Without dead ends: 13531 [2020-10-29 08:06:16,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:06:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13531 states. [2020-10-29 08:06:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13531 to 13375. [2020-10-29 08:06:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13375 states. [2020-10-29 08:06:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 14251 transitions. [2020-10-29 08:06:16,458 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 14251 transitions. Word has length 1184 [2020-10-29 08:06:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:06:16,459 INFO L481 AbstractCegarLoop]: Abstraction has 13375 states and 14251 transitions. [2020-10-29 08:06:16,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:06:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 14251 transitions. [2020-10-29 08:06:16,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2020-10-29 08:06:16,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:06:16,488 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:06:16,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 08:06:16,488 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:06:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:06:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1316112929, now seen corresponding path program 1 times [2020-10-29 08:06:16,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:06:16,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771959998] [2020-10-29 08:06:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:06:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1294 [2020-10-29 08:06:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:06:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 08:06:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:21,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 08:06:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 08:06:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:21,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:06:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:21,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:21,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:06:21,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:06:21,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:21,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:21,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:21,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:06:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:21,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:22,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 08:06:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:06:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:22,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:22,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:06:22,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:22,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 08:06:22,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:22,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:06:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 08:06:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:22,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-29 08:06:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:22,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:22,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 08:06:22,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:06:22,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:22,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 08:06:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:06:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:22,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:22,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 08:06:22,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 08:06:22,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:22,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-29 08:06:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-29 08:06:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:22,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:22,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:22,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:06:22,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:06:22,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:22,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:06:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:22,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2020-10-29 08:06:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2020-10-29 08:06:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:22,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:22,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 08:06:22,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:06:22,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:22,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-29 08:06:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3246 backedges. 541 proven. 738 refuted. 0 times theorem prover too weak. 1967 trivial. 0 not checked. [2020-10-29 08:06:23,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771959998] [2020-10-29 08:06:23,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:06:23,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:06:23,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295344818] [2020-10-29 08:06:23,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:06:23,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:06:23,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:06:23,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:06:23,898 INFO L87 Difference]: Start difference. First operand 13375 states and 14251 transitions. Second operand 7 states. [2020-10-29 08:06:25,110 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 08:06:26,265 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 08:06:32,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:06:32,266 INFO L93 Difference]: Finished difference Result 31375 states and 34363 transitions. [2020-10-29 08:06:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:06:32,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1270 [2020-10-29 08:06:32,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:06:32,314 INFO L225 Difference]: With dead ends: 31375 [2020-10-29 08:06:32,314 INFO L226 Difference]: Without dead ends: 18343 [2020-10-29 08:06:32,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:06:32,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18343 states. [2020-10-29 08:06:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18343 to 17118. [2020-10-29 08:06:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17118 states. [2020-10-29 08:06:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17118 states to 17118 states and 18298 transitions. [2020-10-29 08:06:32,664 INFO L78 Accepts]: Start accepts. Automaton has 17118 states and 18298 transitions. Word has length 1270 [2020-10-29 08:06:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:06:32,665 INFO L481 AbstractCegarLoop]: Abstraction has 17118 states and 18298 transitions. [2020-10-29 08:06:32,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:06:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 17118 states and 18298 transitions. [2020-10-29 08:06:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1440 [2020-10-29 08:06:32,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:06:32,694 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:06:32,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 08:06:32,694 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:06:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:06:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash 65426609, now seen corresponding path program 1 times [2020-10-29 08:06:32,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:06:32,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123030764] [2020-10-29 08:06:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:06:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:33,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:37,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:37,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1467 [2020-10-29 08:06:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:06:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-29 08:06:37,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:37,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 890 [2020-10-29 08:06:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 08:06:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0