/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=SHALLOWEST --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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:54:41,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:54:41,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:54:41,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:54:41,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:54:41,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:54:41,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:54:41,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:54:41,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:54:41,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:54:41,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:54:41,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:54:41,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:54:41,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:54:41,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:54:41,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:54:41,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:54:41,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:54:41,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:54:41,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:54:41,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:54:41,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:54:41,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:54:41,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:54:41,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:54:41,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:54:41,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:54:41,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:54:41,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:54:41,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:54:41,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:54:41,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:54:41,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:54:41,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:54:41,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:54:41,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:54:41,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:54:41,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:54:41,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:54:41,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:54:41,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:54:41,911 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 [2020-10-26 23:54:41,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:54:41,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:54:41,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:54:41,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:54:41,942 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:54:41,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:54:41,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:54:41,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:54:41,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:54:41,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:54:41,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:54:41,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:54:41,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:54:41,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:54:41,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:54:41,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:54:41,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:54:41,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:54:41,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:54:41,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:54:41,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:54:41,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:54:41,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:54:41,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:54:41,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:54:41,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:54:41,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:54:41,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:54:41,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:54:41,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:54:42,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:54:42,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:54:42,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:54:42,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:54:42,401 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:54:42,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label19.c [2020-10-26 23:54:42,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92acb643e/2c34cc24f6e443d7a05e8778d3e18f51/FLAG276ec3a56 [2020-10-26 23:54:43,514 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:54:43,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label19.c [2020-10-26 23:54:43,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92acb643e/2c34cc24f6e443d7a05e8778d3e18f51/FLAG276ec3a56 [2020-10-26 23:54:43,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92acb643e/2c34cc24f6e443d7a05e8778d3e18f51 [2020-10-26 23:54:43,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:54:43,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:54:43,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:54:43,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:54:43,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:54:43,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:54:43" (1/1) ... [2020-10-26 23:54:43,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c76db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:43, skipping insertion in model container [2020-10-26 23:54:43,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:54:43" (1/1) ... [2020-10-26 23:54:43,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:54:43,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:54:44,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:54:44,465 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:54:44,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:54:44,756 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:54:44,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44 WrapperNode [2020-10-26 23:54:44,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:54:44,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:54:44,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:54:44,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:54:44,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (1/1) ... [2020-10-26 23:54:44,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (1/1) ... [2020-10-26 23:54:44,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (1/1) ... [2020-10-26 23:54:44,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (1/1) ... [2020-10-26 23:54:44,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (1/1) ... [2020-10-26 23:54:44,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (1/1) ... [2020-10-26 23:54:44,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (1/1) ... [2020-10-26 23:54:44,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:54:44,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:54:44,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:54:44,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:54:44,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (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 [2020-10-26 23:54:45,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:54:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:54:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:54:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:54:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:54:45,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:54:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:54:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:54:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:54:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:54:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:54:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:54:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:54:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:54:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:54:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:54:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:54:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:54:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:54:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:54:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:54:47,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:54:47,679 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:54:47,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:54:47 BoogieIcfgContainer [2020-10-26 23:54:47,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:54:47,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:54:47,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:54:47,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:54:47,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:54:43" (1/3) ... [2020-10-26 23:54:47,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a419e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:54:47, skipping insertion in model container [2020-10-26 23:54:47,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:44" (2/3) ... [2020-10-26 23:54:47,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a419e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:54:47, skipping insertion in model container [2020-10-26 23:54:47,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:54:47" (3/3) ... [2020-10-26 23:54:47,692 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label19.c [2020-10-26 23:54:47,705 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:54:47,711 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:54:47,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:54:47,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:54:47,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:54:47,764 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:54:47,764 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:54:47,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:54:47,764 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:54:47,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:54:47,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:54:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:54:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 23:54:47,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:47,820 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] [2020-10-26 23:54:47,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:47,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1582356444, now seen corresponding path program 1 times [2020-10-26 23:54:47,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:47,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940565374] [2020-10-26 23:54:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:48,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:48,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 23:54:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-26 23:54:48,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:54:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 23:54:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:54:48,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:48,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:54:48,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:54:48,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940565374] [2020-10-26 23:54:48,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:54:48,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:54:48,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177653448] [2020-10-26 23:54:48,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:54:48,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:48,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:54:48,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:54:48,936 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:54:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:53,979 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-26 23:54:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:54:53,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-26 23:54:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:54,012 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:54:54,013 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:54:54,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:54:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:54:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-26 23:54:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-26 23:54:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-26 23:54:54,139 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 50 [2020-10-26 23:54:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:54,139 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-26 23:54:54,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:54:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-26 23:54:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-26 23:54:54,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:54,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:54,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:54:54,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:54,155 INFO L82 PathProgramCache]: Analyzing trace with hash -881517252, now seen corresponding path program 1 times [2020-10-26 23:54:54,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:54,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944049299] [2020-10-26 23:54:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 23:54:55,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-26 23:54:55,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:54:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:54:55,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:55,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:55,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:55,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:55,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:54:55,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:55,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:56,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:56,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:54:56,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 23:54:56,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:54:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:54:56,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944049299] [2020-10-26 23:54:56,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:54:56,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:54:56,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585233334] [2020-10-26 23:54:56,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:54:56,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:56,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:54:56,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:54:56,160 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 8 states. [2020-10-26 23:55:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:04,061 INFO L93 Difference]: Finished difference Result 2771 states and 4140 transitions. [2020-10-26 23:55:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:55:04,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-26 23:55:04,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:04,079 INFO L225 Difference]: With dead ends: 2771 [2020-10-26 23:55:04,080 INFO L226 Difference]: Without dead ends: 2084 [2020-10-26 23:55:04,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:55:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-10-26 23:55:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2070. [2020-10-26 23:55:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-26 23:55:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2819 transitions. [2020-10-26 23:55:04,242 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2819 transitions. Word has length 126 [2020-10-26 23:55:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:04,244 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 2819 transitions. [2020-10-26 23:55:04,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:55:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2819 transitions. [2020-10-26 23:55:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-26 23:55:04,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:04,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:04,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:55:04,249 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:04,250 INFO L82 PathProgramCache]: Analyzing trace with hash -288920094, now seen corresponding path program 1 times [2020-10-26 23:55:04,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:04,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881932395] [2020-10-26 23:55:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:04,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:04,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-26 23:55:04,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-26 23:55:04,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:55:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 23:55:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:04,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:04,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:55:04,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:04,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:04,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:04,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:04,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:04,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:55:04,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:55:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:04,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881932395] [2020-10-26 23:55:04,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:04,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:55:04,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920972595] [2020-10-26 23:55:04,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:55:04,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:04,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:55:04,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:55:04,936 INFO L87 Difference]: Start difference. First operand 2070 states and 2819 transitions. Second operand 5 states. [2020-10-26 23:55:09,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:09,723 INFO L93 Difference]: Finished difference Result 5174 states and 7351 transitions. [2020-10-26 23:55:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:55:09,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-26 23:55:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:09,744 INFO L225 Difference]: With dead ends: 5174 [2020-10-26 23:55:09,744 INFO L226 Difference]: Without dead ends: 3110 [2020-10-26 23:55:09,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:55:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2020-10-26 23:55:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3104. [2020-10-26 23:55:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3104 states. [2020-10-26 23:55:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 4047 transitions. [2020-10-26 23:55:09,861 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 4047 transitions. Word has length 141 [2020-10-26 23:55:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:09,862 INFO L481 AbstractCegarLoop]: Abstraction has 3104 states and 4047 transitions. [2020-10-26 23:55:09,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:55:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 4047 transitions. [2020-10-26 23:55:09,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-26 23:55:09,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:09,869 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:09,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:55:09,869 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:09,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1250159014, now seen corresponding path program 1 times [2020-10-26 23:55:09,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:09,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954946508] [2020-10-26 23:55:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:11,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:14,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:14,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-26 23:55:14,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:55:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 23:55:14,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:55:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:15,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:15,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:15,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:15,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:55:15,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:15,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:15,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:55:15,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:15,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:55:15,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:55:15,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:55:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:15,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:55:15,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:55:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 84 proven. 95 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:55:15,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954946508] [2020-10-26 23:55:15,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:15,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:15,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847821055] [2020-10-26 23:55:15,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:15,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:15,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:15,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:15,718 INFO L87 Difference]: Start difference. First operand 3104 states and 4047 transitions. Second operand 7 states. [2020-10-26 23:55:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:20,559 INFO L93 Difference]: Finished difference Result 6929 states and 8955 transitions. [2020-10-26 23:55:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:55:20,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-26 23:55:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:20,581 INFO L225 Difference]: With dead ends: 6929 [2020-10-26 23:55:20,581 INFO L226 Difference]: Without dead ends: 3831 [2020-10-26 23:55:20,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:55:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2020-10-26 23:55:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3819. [2020-10-26 23:55:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3819 states. [2020-10-26 23:55:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 4852 transitions. [2020-10-26 23:55:20,706 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 4852 transitions. Word has length 279 [2020-10-26 23:55:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:20,707 INFO L481 AbstractCegarLoop]: Abstraction has 3819 states and 4852 transitions. [2020-10-26 23:55:20,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 4852 transitions. [2020-10-26 23:55:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-26 23:55:20,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:20,714 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:20,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:55:20,715 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1351207328, now seen corresponding path program 1 times [2020-10-26 23:55:20,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:20,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289414255] [2020-10-26 23:55:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:21,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:25,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:25,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-26 23:55:25,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:55:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:55:25,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:55:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-26 23:55:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:25,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:25,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:25,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:25,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:25,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:55:25,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:25,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:26,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:26,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:26,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:26,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:55:26,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:55:26,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:55:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:26,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:55:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 23:55:26,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:55:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-26 23:55:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:26,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:26,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:26,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-26 23:55:26,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 23:55:26,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:55:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 288 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-26 23:55:27,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289414255] [2020-10-26 23:55:27,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:27,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:27,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511454425] [2020-10-26 23:55:27,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:55:27,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:27,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:55:27,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:55:27,271 INFO L87 Difference]: Start difference. First operand 3819 states and 4852 transitions. Second operand 8 states. [2020-10-26 23:55:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:33,023 INFO L93 Difference]: Finished difference Result 9090 states and 12215 transitions. [2020-10-26 23:55:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:55:33,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 322 [2020-10-26 23:55:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:33,050 INFO L225 Difference]: With dead ends: 9090 [2020-10-26 23:55:33,050 INFO L226 Difference]: Without dead ends: 4863 [2020-10-26 23:55:33,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:55:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2020-10-26 23:55:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4833. [2020-10-26 23:55:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4833 states. [2020-10-26 23:55:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 5380 transitions. [2020-10-26 23:55:33,191 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 5380 transitions. Word has length 322 [2020-10-26 23:55:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:33,192 INFO L481 AbstractCegarLoop]: Abstraction has 4833 states and 5380 transitions. [2020-10-26 23:55:33,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:55:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 5380 transitions. [2020-10-26 23:55:33,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-26 23:55:33,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:33,201 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:33,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:55:33,202 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1687717576, now seen corresponding path program 1 times [2020-10-26 23:55:33,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:33,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196685160] [2020-10-26 23:55:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:33,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:35,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:35,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-26 23:55:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-10-26 23:55:35,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:55:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:35,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:35,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:35,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:35,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:55:35,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:36,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:55:36,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-26 23:55:36,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:55:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:55:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-26 23:55:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:36,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:55:37,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196685160] [2020-10-26 23:55:37,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:37,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:37,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31502548] [2020-10-26 23:55:37,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:37,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:37,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:37,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:37,252 INFO L87 Difference]: Start difference. First operand 4833 states and 5380 transitions. Second operand 7 states. [2020-10-26 23:55:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:41,397 INFO L93 Difference]: Finished difference Result 11392 states and 12848 transitions. [2020-10-26 23:55:41,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:55:41,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-26 23:55:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:41,433 INFO L225 Difference]: With dead ends: 11392 [2020-10-26 23:55:41,433 INFO L226 Difference]: Without dead ends: 7241 [2020-10-26 23:55:41,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7241 states. [2020-10-26 23:55:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7241 to 6894. [2020-10-26 23:55:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6894 states. [2020-10-26 23:55:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6894 states to 6894 states and 7640 transitions. [2020-10-26 23:55:41,636 INFO L78 Accepts]: Start accepts. Automaton has 6894 states and 7640 transitions. Word has length 418 [2020-10-26 23:55:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:41,637 INFO L481 AbstractCegarLoop]: Abstraction has 6894 states and 7640 transitions. [2020-10-26 23:55:41,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6894 states and 7640 transitions. [2020-10-26 23:55:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-26 23:55:41,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:41,654 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:41,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:55:41,654 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:41,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:41,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1906220824, now seen corresponding path program 1 times [2020-10-26 23:55:41,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:41,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977889650] [2020-10-26 23:55:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:41,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:43,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:43,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-26 23:55:43,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-26 23:55:43,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:55:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:43,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:43,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:43,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:43,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:43,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:55:43,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:43,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:43,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:43,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:43,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:43,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:55:43,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:44,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:55:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:55:44,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-26 23:55:44,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:55:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:55:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:44,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:44,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-26 23:55:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-26 23:55:44,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977889650] [2020-10-26 23:55:44,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:44,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:44,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522975841] [2020-10-26 23:55:44,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:44,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:44,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:44,911 INFO L87 Difference]: Start difference. First operand 6894 states and 7640 transitions. Second operand 7 states. [2020-10-26 23:55:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:49,153 INFO L93 Difference]: Finished difference Result 13124 states and 14621 transitions. [2020-10-26 23:55:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:55:49,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 526 [2020-10-26 23:55:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:49,194 INFO L225 Difference]: With dead ends: 13124 [2020-10-26 23:55:49,194 INFO L226 Difference]: Without dead ends: 6912 [2020-10-26 23:55:49,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2020-10-26 23:55:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 6892. [2020-10-26 23:55:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6892 states. [2020-10-26 23:55:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6892 states to 6892 states and 7432 transitions. [2020-10-26 23:55:49,403 INFO L78 Accepts]: Start accepts. Automaton has 6892 states and 7432 transitions. Word has length 526 [2020-10-26 23:55:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:49,404 INFO L481 AbstractCegarLoop]: Abstraction has 6892 states and 7432 transitions. [2020-10-26 23:55:49,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:49,404 INFO L276 IsEmpty]: Start isEmpty. Operand 6892 states and 7432 transitions. [2020-10-26 23:55:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-26 23:55:49,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:49,424 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:55:49,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:55:49,425 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:49,425 INFO L82 PathProgramCache]: Analyzing trace with hash 251006674, now seen corresponding path program 1 times [2020-10-26 23:55:49,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:49,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815597978] [2020-10-26 23:55:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:54,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:54,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 631 [2020-10-26 23:55:54,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:55:54,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-26 23:55:54,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:55:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:55:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:54,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:54,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:54,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:54,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:55:54,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:55,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:55,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:55,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-26 23:55:55,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:55:55,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:55,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:55:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:55,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:55,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:55:55,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-26 23:55:55,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:55:55,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:55:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:56,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:55:56,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:55:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:55:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 131 proven. 370 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:55:57,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815597978] [2020-10-26 23:55:57,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:57,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:55:57,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566088295] [2020-10-26 23:55:57,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:55:57,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:57,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:55:57,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:55:57,192 INFO L87 Difference]: Start difference. First operand 6892 states and 7432 transitions. Second operand 8 states. [2020-10-26 23:56:00,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:00,945 INFO L93 Difference]: Finished difference Result 13126 states and 14204 transitions. [2020-10-26 23:56:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:56:00,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 615 [2020-10-26 23:56:00,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:00,965 INFO L225 Difference]: With dead ends: 13126 [2020-10-26 23:56:00,965 INFO L226 Difference]: Without dead ends: 6916 [2020-10-26 23:56:00,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:56:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2020-10-26 23:56:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 6892. [2020-10-26 23:56:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6892 states. [2020-10-26 23:56:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6892 states to 6892 states and 7430 transitions. [2020-10-26 23:56:01,116 INFO L78 Accepts]: Start accepts. Automaton has 6892 states and 7430 transitions. Word has length 615 [2020-10-26 23:56:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:01,118 INFO L481 AbstractCegarLoop]: Abstraction has 6892 states and 7430 transitions. [2020-10-26 23:56:01,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:56:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6892 states and 7430 transitions. [2020-10-26 23:56:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2020-10-26 23:56:01,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:01,128 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:01,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:56:01,128 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:01,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:01,129 INFO L82 PathProgramCache]: Analyzing trace with hash 597981092, now seen corresponding path program 1 times [2020-10-26 23:56:01,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:01,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122878507] [2020-10-26 23:56:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:01,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:04,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 632 [2020-10-26 23:56:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2939 [2020-10-26 23:56:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:56:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-26 23:56:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:04,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:04,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:04,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:56:04,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:04,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:04,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:04,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:56:04,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:04,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:04,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:04,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:04,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:56:04,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:56:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:56:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-26 23:56:05,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-26 23:56:05,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:05,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:56:05,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 444 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-26 23:56:05,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122878507] [2020-10-26 23:56:05,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:05,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:05,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614846248] [2020-10-26 23:56:05,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:05,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:05,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:05,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:05,464 INFO L87 Difference]: Start difference. First operand 6892 states and 7430 transitions. Second operand 7 states. [2020-10-26 23:56:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:09,185 INFO L93 Difference]: Finished difference Result 17530 states and 19085 transitions. [2020-10-26 23:56:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:56:09,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 616 [2020-10-26 23:56:09,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:09,224 INFO L225 Difference]: With dead ends: 17530 [2020-10-26 23:56:09,224 INFO L226 Difference]: Without dead ends: 11320 [2020-10-26 23:56:09,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11320 states. [2020-10-26 23:56:09,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11320 to 10642. [2020-10-26 23:56:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10642 states. [2020-10-26 23:56:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10642 states to 10642 states and 11571 transitions. [2020-10-26 23:56:09,484 INFO L78 Accepts]: Start accepts. Automaton has 10642 states and 11571 transitions. Word has length 616 [2020-10-26 23:56:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:09,486 INFO L481 AbstractCegarLoop]: Abstraction has 10642 states and 11571 transitions. [2020-10-26 23:56:09,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10642 states and 11571 transitions. [2020-10-26 23:56:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2020-10-26 23:56:09,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:09,498 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:09,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:56:09,498 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:09,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:09,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1359468718, now seen corresponding path program 1 times [2020-10-26 23:56:09,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:09,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170609665] [2020-10-26 23:56:09,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:10,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:10,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-26 23:56:10,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-26 23:56:10,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-26 23:56:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 23:56:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:10,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:10,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:10,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:56:10,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:10,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:10,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:56:10,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:10,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:10,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:10,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:11,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:11,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:11,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:56:11,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:56:11,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:56:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:11,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-26 23:56:11,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:56:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-26 23:56:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-26 23:56:11,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170609665] [2020-10-26 23:56:11,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:11,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:56:11,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297830890] [2020-10-26 23:56:11,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:56:11,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:11,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:56:11,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:56:11,718 INFO L87 Difference]: Start difference. First operand 10642 states and 11571 transitions. Second operand 5 states. [2020-10-26 23:56:15,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:15,193 INFO L93 Difference]: Finished difference Result 22634 states and 24667 transitions. [2020-10-26 23:56:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:56:15,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 673 [2020-10-26 23:56:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:15,235 INFO L225 Difference]: With dead ends: 22634 [2020-10-26 23:56:15,235 INFO L226 Difference]: Without dead ends: 12674 [2020-10-26 23:56:15,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:56:15,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12674 states. [2020-10-26 23:56:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12674 to 12672. [2020-10-26 23:56:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12672 states. [2020-10-26 23:56:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12672 states to 12672 states and 13706 transitions. [2020-10-26 23:56:15,560 INFO L78 Accepts]: Start accepts. Automaton has 12672 states and 13706 transitions. Word has length 673 [2020-10-26 23:56:15,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:15,562 INFO L481 AbstractCegarLoop]: Abstraction has 12672 states and 13706 transitions. [2020-10-26 23:56:15,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:56:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 12672 states and 13706 transitions. [2020-10-26 23:56:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-26 23:56:15,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:15,595 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:56:15,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:56:15,595 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:15,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1932609670, now seen corresponding path program 1 times [2020-10-26 23:56:15,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:15,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362289566] [2020-10-26 23:56:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:18,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:19,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1067 [2020-10-26 23:56:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:56:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-26 23:56:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:56:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:56:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:21,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:21,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:56:21,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:56:21,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:56:21,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:56:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:56:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:56:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-26 23:56:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:56:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-26 23:56:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-26 23:56:21,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:56:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-26 23:56:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:22,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 895 [2020-10-26 23:56:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:22,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:22,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:22,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:56:22,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 551 proven. 269 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2020-10-26 23:56:22,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362289566] [2020-10-26 23:56:22,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:22,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:22,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243063464] [2020-10-26 23:56:22,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:22,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:22,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:22,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:22,950 INFO L87 Difference]: Start difference. First operand 12672 states and 13706 transitions. Second operand 7 states. [2020-10-26 23:56:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:29,240 INFO L93 Difference]: Finished difference Result 27400 states and 29772 transitions. [2020-10-26 23:56:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:29,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1047 [2020-10-26 23:56:29,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:29,284 INFO L225 Difference]: With dead ends: 27400 [2020-10-26 23:56:29,284 INFO L226 Difference]: Without dead ends: 15410 [2020-10-26 23:56:29,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15410 states. [2020-10-26 23:56:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15410 to 15399. [2020-10-26 23:56:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15399 states. [2020-10-26 23:56:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15399 states to 15399 states and 16643 transitions. [2020-10-26 23:56:29,815 INFO L78 Accepts]: Start accepts. Automaton has 15399 states and 16643 transitions. Word has length 1047 [2020-10-26 23:56:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:29,816 INFO L481 AbstractCegarLoop]: Abstraction has 15399 states and 16643 transitions. [2020-10-26 23:56:29,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 15399 states and 16643 transitions. [2020-10-26 23:56:29,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2020-10-26 23:56:29,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:29,847 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:56:29,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:56:29,848 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash 301364670, now seen corresponding path program 1 times [2020-10-26 23:56:29,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:29,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046239507] [2020-10-26 23:56:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:30,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:34,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-26 23:56:35,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:35,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-26 23:56:35,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:56:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-26 23:56:35,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:35,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:56:35,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:35,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:56:35,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:35,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:56:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:56:35,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:56:35,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:56:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:56:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:36,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:36,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-26 23:56:36,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-26 23:56:36,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-26 23:56:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 897 [2020-10-26 23:56:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:36,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:36,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:36,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:36,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:56:36,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 850 proven. 109 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2020-10-26 23:56:37,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046239507] [2020-10-26 23:56:37,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:37,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:37,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904857906] [2020-10-26 23:56:37,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:37,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:37,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:37,272 INFO L87 Difference]: Start difference. First operand 15399 states and 16643 transitions. Second operand 7 states. [2020-10-26 23:56:41,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:41,577 INFO L93 Difference]: Finished difference Result 31823 states and 34614 transitions. [2020-10-26 23:56:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:56:41,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1049 [2020-10-26 23:56:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:41,624 INFO L225 Difference]: With dead ends: 31823 [2020-10-26 23:56:41,624 INFO L226 Difference]: Without dead ends: 16767 [2020-10-26 23:56:41,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16767 states. [2020-10-26 23:56:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16767 to 16422. [2020-10-26 23:56:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16422 states. [2020-10-26 23:56:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16422 states to 16422 states and 17625 transitions. [2020-10-26 23:56:41,938 INFO L78 Accepts]: Start accepts. Automaton has 16422 states and 17625 transitions. Word has length 1049 [2020-10-26 23:56:41,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:41,939 INFO L481 AbstractCegarLoop]: Abstraction has 16422 states and 17625 transitions. [2020-10-26 23:56:41,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 16422 states and 17625 transitions. [2020-10-26 23:56:41,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1108 [2020-10-26 23:56:41,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:41,972 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:41,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:56:41,973 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:41,973 INFO L82 PathProgramCache]: Analyzing trace with hash 216445426, now seen corresponding path program 1 times [2020-10-26 23:56:41,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:41,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069675083] [2020-10-26 23:56:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:42,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1131 [2020-10-26 23:56:47,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:56:47,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:56:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:47,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:47,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:56:47,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:56:47,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:56:47,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:56:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:56:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:56:47,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:56:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:56:48,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:56:48,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:56:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:48,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-26 23:56:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 813 [2020-10-26 23:56:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:56:48,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:56:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:56:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:48,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 955 [2020-10-26 23:56:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:56:48,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:56:48,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:56:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2717 backedges. 583 proven. 428 refuted. 0 times theorem prover too weak. 1706 trivial. 0 not checked. [2020-10-26 23:56:49,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069675083] [2020-10-26 23:56:49,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:49,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:49,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733577457] [2020-10-26 23:56:49,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:49,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:49,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:49,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:49,596 INFO L87 Difference]: Start difference. First operand 16422 states and 17625 transitions. Second operand 7 states. [2020-10-26 23:56:53,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:53,913 INFO L93 Difference]: Finished difference Result 32503 states and 34924 transitions. [2020-10-26 23:56:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:56:53,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1107 [2020-10-26 23:56:53,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:53,959 INFO L225 Difference]: With dead ends: 32503 [2020-10-26 23:56:53,959 INFO L226 Difference]: Without dead ends: 16767 [2020-10-26 23:56:53,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16767 states. [2020-10-26 23:56:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16767 to 16761. [2020-10-26 23:56:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16761 states. [2020-10-26 23:56:54,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16761 states to 16761 states and 17967 transitions. [2020-10-26 23:56:54,294 INFO L78 Accepts]: Start accepts. Automaton has 16761 states and 17967 transitions. Word has length 1107 [2020-10-26 23:56:54,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:54,295 INFO L481 AbstractCegarLoop]: Abstraction has 16761 states and 17967 transitions. [2020-10-26 23:56:54,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 16761 states and 17967 transitions. [2020-10-26 23:56:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2020-10-26 23:56:54,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:54,342 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:54,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:56:54,343 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:54,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:54,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1508643382, now seen corresponding path program 1 times [2020-10-26 23:56:54,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:54,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885600558] [2020-10-26 23:56:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1133 [2020-10-26 23:56:59,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:56:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:56:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:56:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:59,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:56:59,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:59,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:56:59,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:00,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:57:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:57:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:57:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:57:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:00,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:00,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:00,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:57:00,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:57:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:57:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:57:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:57:00,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:57:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-26 23:57:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:00,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:57:00,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:57:00,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:57:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:00,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 815 [2020-10-26 23:57:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:00,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:57:00,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:00,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:57:00,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:57:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 957 [2020-10-26 23:57:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:01,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:01,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:01,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:57:01,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:57:01,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:57:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 583 proven. 428 refuted. 0 times theorem prover too weak. 1708 trivial. 0 not checked. [2020-10-26 23:57:02,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885600558] [2020-10-26 23:57:02,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:02,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:02,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088267518] [2020-10-26 23:57:02,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:02,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:02,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:02,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:02,024 INFO L87 Difference]: Start difference. First operand 16761 states and 17967 transitions. Second operand 7 states. [2020-10-26 23:57:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:07,062 INFO L93 Difference]: Finished difference Result 35536 states and 38293 transitions. [2020-10-26 23:57:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:07,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1109 [2020-10-26 23:57:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:07,104 INFO L225 Difference]: With dead ends: 35536 [2020-10-26 23:57:07,104 INFO L226 Difference]: Without dead ends: 19461 [2020-10-26 23:57:07,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:57:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19461 states. [2020-10-26 23:57:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19461 to 19122. [2020-10-26 23:57:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19122 states. [2020-10-26 23:57:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19122 states to 19122 states and 20233 transitions. [2020-10-26 23:57:07,473 INFO L78 Accepts]: Start accepts. Automaton has 19122 states and 20233 transitions. Word has length 1109 [2020-10-26 23:57:07,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:07,474 INFO L481 AbstractCegarLoop]: Abstraction has 19122 states and 20233 transitions. [2020-10-26 23:57:07,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand 19122 states and 20233 transitions. [2020-10-26 23:57:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1234 [2020-10-26 23:57:07,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:07,515 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:07,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:57:07,516 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1948234974, now seen corresponding path program 1 times [2020-10-26 23:57:07,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:07,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458393393] [2020-10-26 23:57:07,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:08,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:12,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1259 [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:57:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:13,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:13,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:13,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:13,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:13,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:13,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:13,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:13,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:57:13,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:13,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:13,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:57:13,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:13,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:57:13,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:13,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:57:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:13,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:57:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:57:13,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:57:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:13,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:13,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:57:13,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:57:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:57:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:57:13,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:57:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:57:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:13,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:13,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:57:13,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:57:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-26 23:57:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:13,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:13,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-26 23:57:13,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:57:13,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-26 23:57:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:14,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1081 [2020-10-26 23:57:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3394 backedges. 896 proven. 221 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2020-10-26 23:57:14,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458393393] [2020-10-26 23:57:14,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:14,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:14,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103700740] [2020-10-26 23:57:14,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:14,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:14,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:14,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:14,877 INFO L87 Difference]: Start difference. First operand 19122 states and 20233 transitions. Second operand 7 states. [2020-10-26 23:57:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:21,262 INFO L93 Difference]: Finished difference Result 41284 states and 43793 transitions. [2020-10-26 23:57:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:21,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1233 [2020-10-26 23:57:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:21,319 INFO L225 Difference]: With dead ends: 41284 [2020-10-26 23:57:21,319 INFO L226 Difference]: Without dead ends: 22848 [2020-10-26 23:57:21,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:57:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22848 states. [2020-10-26 23:57:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22848 to 22844. [2020-10-26 23:57:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22844 states. [2020-10-26 23:57:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22844 states to 22844 states and 24085 transitions. [2020-10-26 23:57:21,801 INFO L78 Accepts]: Start accepts. Automaton has 22844 states and 24085 transitions. Word has length 1233 [2020-10-26 23:57:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:21,802 INFO L481 AbstractCegarLoop]: Abstraction has 22844 states and 24085 transitions. [2020-10-26 23:57:21,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22844 states and 24085 transitions. [2020-10-26 23:57:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1265 [2020-10-26 23:57:21,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:21,842 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:57:21,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:57:21,844 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:21,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1246462368, now seen corresponding path program 1 times [2020-10-26 23:57:21,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:21,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408503199] [2020-10-26 23:57:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:22,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:27,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1290 [2020-10-26 23:57:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-26 23:57:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:57:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:57:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 435 [2020-10-26 23:57:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:27,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:27,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:27,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:27,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:57:27,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:27,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:27,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:27,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:27,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:27,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:27,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:27,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:57:27,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:27,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:27,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:27,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:27,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:57:27,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:57:27,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:57:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:57:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:57:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:27,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:57:27,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:57:27,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:57:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:57:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:28,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:28,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:57:28,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:57:28,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:57:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-26 23:57:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:28,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:28,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-26 23:57:28,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-26 23:57:28,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-26 23:57:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-26 23:57:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:57:28,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 1993 proven. 233 refuted. 0 times theorem prover too weak. 1414 trivial. 0 not checked. [2020-10-26 23:57:30,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408503199] [2020-10-26 23:57:30,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:30,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:57:30,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622364722] [2020-10-26 23:57:30,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:30,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:30,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:30,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:30,908 INFO L87 Difference]: Start difference. First operand 22844 states and 24085 transitions. Second operand 8 states. [2020-10-26 23:57:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:34,490 INFO L93 Difference]: Finished difference Result 45088 states and 47701 transitions. [2020-10-26 23:57:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 23:57:34,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1264 [2020-10-26 23:57:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:34,546 INFO L225 Difference]: With dead ends: 45088 [2020-10-26 23:57:34,546 INFO L226 Difference]: Without dead ends: 22930 [2020-10-26 23:57:34,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:57:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22930 states. [2020-10-26 23:57:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22930 to 22505. [2020-10-26 23:57:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22505 states. [2020-10-26 23:57:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22505 states to 22505 states and 23509 transitions. [2020-10-26 23:57:34,998 INFO L78 Accepts]: Start accepts. Automaton has 22505 states and 23509 transitions. Word has length 1264 [2020-10-26 23:57:34,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:34,999 INFO L481 AbstractCegarLoop]: Abstraction has 22505 states and 23509 transitions. [2020-10-26 23:57:35,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:35,000 INFO L276 IsEmpty]: Start isEmpty. Operand 22505 states and 23509 transitions. [2020-10-26 23:57:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1560 [2020-10-26 23:57:35,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:35,031 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:35,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:57:35,031 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:35,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1894004986, now seen corresponding path program 1 times [2020-10-26 23:57:35,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:35,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507443632] [2020-10-26 23:57:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1589 [2020-10-26 23:57:40,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:40,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5215 [2020-10-26 23:57:40,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:57:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:57:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:40,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:57:40,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:40,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:57:40,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:57:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:57:40,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:57:40,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:57:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:41,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:57:41,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:57:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:57:41,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:41,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 23:57:41,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:57:41,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:57:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:57:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:57:41,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:57:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-26 23:57:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-26 23:57:41,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:57:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-26 23:57:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-26 23:57:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:57:41,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:57:41,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:57:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-26 23:57:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:42,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:42,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-26 23:57:42,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-26 23:57:42,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-26 23:57:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:42,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:57:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:42,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:42,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 23:57:42,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:42,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:57:42,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:42,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:42,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:42,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4896 backedges. 858 proven. 242 refuted. 0 times theorem prover too weak. 3796 trivial. 0 not checked. [2020-10-26 23:57:43,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507443632] [2020-10-26 23:57:43,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:43,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:43,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179005257] [2020-10-26 23:57:43,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:43,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:43,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:43,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:43,637 INFO L87 Difference]: Start difference. First operand 22505 states and 23509 transitions. Second operand 7 states. [2020-10-26 23:57:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:48,192 INFO L93 Difference]: Finished difference Result 46026 states and 48094 transitions. [2020-10-26 23:57:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:48,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1559 [2020-10-26 23:57:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:48,239 INFO L225 Difference]: With dead ends: 46026 [2020-10-26 23:57:48,239 INFO L226 Difference]: Without dead ends: 24207 [2020-10-26 23:57:48,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24207 states. [2020-10-26 23:57:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24207 to 23520. [2020-10-26 23:57:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23520 states. [2020-10-26 23:57:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23520 states to 23520 states and 24566 transitions. [2020-10-26 23:57:48,698 INFO L78 Accepts]: Start accepts. Automaton has 23520 states and 24566 transitions. Word has length 1559 [2020-10-26 23:57:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:48,699 INFO L481 AbstractCegarLoop]: Abstraction has 23520 states and 24566 transitions. [2020-10-26 23:57:48,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 23520 states and 24566 transitions. [2020-10-26 23:57:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1649 [2020-10-26 23:57:48,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:48,743 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:48,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:57:48,743 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:48,744 INFO L82 PathProgramCache]: Analyzing trace with hash 110405348, now seen corresponding path program 1 times [2020-10-26 23:57:48,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:48,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711065802] [2020-10-26 23:57:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1676 [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 961 [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 23:57:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:54,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:54,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:54,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:54,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:57:54,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:54,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:54,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:54,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:57:54,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:54,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:54,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:57:54,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:57:54,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:54,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:54,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:54,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:54,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:54,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:57:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:55,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:55,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:57:55,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:57:55,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:57:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:55,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:55,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-26 23:57:55,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:55,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:57:55,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-10-26 23:57:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:55,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:55,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:55,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:57:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:57:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:55,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 951 [2020-10-26 23:57:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:55,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:55,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-26 23:57:55,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:55,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-26 23:57:55,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-26 23:57:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1201 [2020-10-26 23:57:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:57:56,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:57:56,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:57:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:56,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1311 [2020-10-26 23:57:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-26 23:57:56,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:57:56,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-26 23:57:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:57:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 23:57:56,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:56,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 1324 proven. 356 refuted. 0 times theorem prover too weak. 3138 trivial. 0 not checked. [2020-10-26 23:57:58,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711065802] [2020-10-26 23:57:58,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:58,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:58,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694852010] [2020-10-26 23:57:58,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:58,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:58,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:58,685 INFO L87 Difference]: Start difference. First operand 23520 states and 24566 transitions. Second operand 7 states. [2020-10-26 23:58:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:03,825 INFO L93 Difference]: Finished difference Result 48050 states and 50173 transitions. [2020-10-26 23:58:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:58:03,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1648 [2020-10-26 23:58:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:03,872 INFO L225 Difference]: With dead ends: 48050 [2020-10-26 23:58:03,872 INFO L226 Difference]: Without dead ends: 25216 [2020-10-26 23:58:03,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:58:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25216 states. [2020-10-26 23:58:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25216 to 24198. [2020-10-26 23:58:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24198 states. [2020-10-26 23:58:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24198 states to 24198 states and 25252 transitions. [2020-10-26 23:58:04,330 INFO L78 Accepts]: Start accepts. Automaton has 24198 states and 25252 transitions. Word has length 1648 [2020-10-26 23:58:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:04,332 INFO L481 AbstractCegarLoop]: Abstraction has 24198 states and 25252 transitions. [2020-10-26 23:58:04,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 24198 states and 25252 transitions. [2020-10-26 23:58:04,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2020-10-26 23:58:04,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:04,388 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:58:04,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:58:04,391 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:04,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:04,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1745378612, now seen corresponding path program 1 times [2020-10-26 23:58:04,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:04,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667015340] [2020-10-26 23:58:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1744 [2020-10-26 23:58:10,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5773 [2020-10-26 23:58:10,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:58:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-26 23:58:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:58:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:10,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:58:10,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:10,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:10,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:58:10,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:58:10,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:58:10,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:10,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:58:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:11,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:58:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:11,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:11,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:58:11,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:58:11,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:58:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:11,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:58:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:11,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:11,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:58:11,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:11,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-26 23:58:11,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-26 23:58:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:11,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-26 23:58:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:12,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-26 23:58:12,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:58:12,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-26 23:58:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1379 [2020-10-26 23:58:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:12,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-26 23:58:12,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:12,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:58:12,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-26 23:58:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:12,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:12,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:58:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:12,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 23:58:12,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:58:12,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0