/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/Problem15_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:36:12,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:36:12,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:36:12,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:36:12,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:36:12,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:36:12,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:36:12,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:36:12,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:36:12,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:36:12,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:36:12,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:36:12,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:36:12,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:36:12,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:36:12,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:36:12,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:36:12,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:36:12,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:36:12,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:36:12,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:36:12,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:36:12,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:36:12,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:36:12,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:36:12,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:36:12,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:36:12,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:36:12,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:36:12,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:36:12,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:36:12,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:36:12,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:36:12,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:36:12,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:36:12,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:36:12,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:36:12,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:36:12,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:36:12,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:36:12,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:36:12,564 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 23:36:12,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:36:12,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:36:12,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:36:12,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:36:12,620 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:36:12,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:36:12,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:36:12,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:36:12,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:36:12,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:36:12,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:36:12,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:36:12,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:36:12,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:36:12,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:36:12,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:36:12,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:36:12,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:36:12,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:36:12,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:36:12,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:36:12,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:36:12,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:36:12,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:36:12,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:36:12,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:36:12,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:36:12,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:36:12,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:36:12,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:36:13,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:36:13,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:36:13,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:36:13,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:36:13,114 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:36:13,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label09.c [2020-10-26 23:36:13,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1854f522f/19c5a335f1cb4feb8015d2754e3c302c/FLAG34e062918 [2020-10-26 23:36:14,160 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:36:14,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label09.c [2020-10-26 23:36:14,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1854f522f/19c5a335f1cb4feb8015d2754e3c302c/FLAG34e062918 [2020-10-26 23:36:14,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1854f522f/19c5a335f1cb4feb8015d2754e3c302c [2020-10-26 23:36:14,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:36:14,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:36:14,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:36:14,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:36:14,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:36:14,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:36:14" (1/1) ... [2020-10-26 23:36:14,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5b3d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:14, skipping insertion in model container [2020-10-26 23:36:14,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:36:14" (1/1) ... [2020-10-26 23:36:14,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:36:14,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:36:15,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:36:15,411 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:36:15,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:36:15,758 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:36:15,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15 WrapperNode [2020-10-26 23:36:15,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:36:15,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:36:15,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:36:15,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:36:15,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (1/1) ... [2020-10-26 23:36:15,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (1/1) ... [2020-10-26 23:36:15,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (1/1) ... [2020-10-26 23:36:15,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (1/1) ... [2020-10-26 23:36:15,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (1/1) ... [2020-10-26 23:36:15,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (1/1) ... [2020-10-26 23:36:16,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (1/1) ... [2020-10-26 23:36:16,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:36:16,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:36:16,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:36:16,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:36:16,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (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 23:36:16,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:36:16,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:36:16,124 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:36:16,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:36:16,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:36:16,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:36:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:36:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:36:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:36:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:36:16,125 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:36:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:36:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:36:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:36:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:36:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:36:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:36:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:36:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:36:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:36:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:36:20,052 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:36:20,052 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:36:20,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:20 BoogieIcfgContainer [2020-10-26 23:36:20,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:36:20,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:36:20,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:36:20,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:36:20,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:36:14" (1/3) ... [2020-10-26 23:36:20,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e57e772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:36:20, skipping insertion in model container [2020-10-26 23:36:20,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:15" (2/3) ... [2020-10-26 23:36:20,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e57e772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:36:20, skipping insertion in model container [2020-10-26 23:36:20,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:20" (3/3) ... [2020-10-26 23:36:20,074 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label09.c [2020-10-26 23:36:20,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:36:20,097 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:36:20,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:36:20,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:36:20,168 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:36:20,168 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:36:20,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:36:20,169 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:36:20,169 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:36:20,169 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:36:20,169 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:36:20,200 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:36:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 23:36:20,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:20,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:20,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:20,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:20,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2060813929, now seen corresponding path program 1 times [2020-10-26 23:36:20,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:20,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563537286] [2020-10-26 23:36:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:20,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:20,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 23:36:20,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-26 23:36:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:36:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 23:36:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:36:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:21,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:21,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:36:21,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:21,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:21,162 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 23:36:21,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563537286] [2020-10-26 23:36:21,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:36:21,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:36:21,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933054601] [2020-10-26 23:36:21,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:36:21,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:21,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:36:21,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:36:21,198 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:36:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:27,875 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-26 23:36:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:36:27,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-26 23:36:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:27,900 INFO L225 Difference]: With dead ends: 1229 [2020-10-26 23:36:27,900 INFO L226 Difference]: Without dead ends: 709 [2020-10-26 23:36:27,913 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 23:36:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-26 23:36:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-26 23:36:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-26 23:36:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-26 23:36:28,061 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 14 [2020-10-26 23:36:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:28,062 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-26 23:36:28,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:36:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-26 23:36:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-26 23:36:28,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:28,068 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:36:28,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:36:28,069 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1167374850, now seen corresponding path program 1 times [2020-10-26 23:36:28,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:28,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099064610] [2020-10-26 23:36:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:28,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:29,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:29,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:36:29,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:36:29,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1322 [2020-10-26 23:36:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:36:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:36:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:36:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:29,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:29,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:29,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:36:29,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:29,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:29,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:29,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:36:29,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 23:36:29,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:36:29,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:36:29,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099064610] [2020-10-26 23:36:29,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:29,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:36:29,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522326518] [2020-10-26 23:36:29,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:36:29,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:29,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:36:29,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:36:29,948 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 6 states. [2020-10-26 23:36:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:40,104 INFO L93 Difference]: Finished difference Result 1716 states and 2741 transitions. [2020-10-26 23:36:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:36:40,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-26 23:36:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:40,115 INFO L225 Difference]: With dead ends: 1716 [2020-10-26 23:36:40,115 INFO L226 Difference]: Without dead ends: 1027 [2020-10-26 23:36:40,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:36:40,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-10-26 23:36:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1016. [2020-10-26 23:36:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-26 23:36:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1374 transitions. [2020-10-26 23:36:40,167 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1374 transitions. Word has length 84 [2020-10-26 23:36:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:40,168 INFO L481 AbstractCegarLoop]: Abstraction has 1016 states and 1374 transitions. [2020-10-26 23:36:40,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:36:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1374 transitions. [2020-10-26 23:36:40,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-26 23:36:40,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:40,172 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:36:40,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:36:40,173 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:40,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash 103258171, now seen corresponding path program 1 times [2020-10-26 23:36:40,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:40,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377229295] [2020-10-26 23:36:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:40,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:41,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 23:36:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-10-26 23:36:41,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:36:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 23:36:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:41,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:41,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:41,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:41,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:36:41,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:41,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:41,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:41,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:41,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:36:41,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 23:36:41,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:36:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:36:41,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377229295] [2020-10-26 23:36:41,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:36:41,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:36:41,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453221713] [2020-10-26 23:36:41,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:41,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:41,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:41,935 INFO L87 Difference]: Start difference. First operand 1016 states and 1374 transitions. Second operand 7 states. [2020-10-26 23:36:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:51,701 INFO L93 Difference]: Finished difference Result 2380 states and 3370 transitions. [2020-10-26 23:36:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:36:51,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-26 23:36:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:51,715 INFO L225 Difference]: With dead ends: 2380 [2020-10-26 23:36:51,715 INFO L226 Difference]: Without dead ends: 1677 [2020-10-26 23:36:51,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:36:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2020-10-26 23:36:51,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1332. [2020-10-26 23:36:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1332 states. [2020-10-26 23:36:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1722 transitions. [2020-10-26 23:36:51,782 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1722 transitions. Word has length 97 [2020-10-26 23:36:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:51,785 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1722 transitions. [2020-10-26 23:36:51,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:36:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1722 transitions. [2020-10-26 23:36:51,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-26 23:36:51,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:51,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:51,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:36:51,802 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1262528127, now seen corresponding path program 1 times [2020-10-26 23:36:51,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:51,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392329152] [2020-10-26 23:36:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:54,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:54,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:36:54,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:36:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2393 [2020-10-26 23:36:54,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:36:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-26 23:36:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:36:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:54,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:55,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:55,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:36:55,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-26 23:36:55,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:36:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:36:55,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392329152] [2020-10-26 23:36:55,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:55,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:36:55,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450514800] [2020-10-26 23:36:55,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:36:55,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:55,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:36:55,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:36:55,309 INFO L87 Difference]: Start difference. First operand 1332 states and 1722 transitions. Second operand 6 states. [2020-10-26 23:37:05,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:05,290 INFO L93 Difference]: Finished difference Result 1982 states and 2450 transitions. [2020-10-26 23:37:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:37:05,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-10-26 23:37:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:05,310 INFO L225 Difference]: With dead ends: 1982 [2020-10-26 23:37:05,311 INFO L226 Difference]: Without dead ends: 1979 [2020-10-26 23:37:05,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:37:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2020-10-26 23:37:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1952. [2020-10-26 23:37:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-26 23:37:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2416 transitions. [2020-10-26 23:37:05,400 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2416 transitions. Word has length 214 [2020-10-26 23:37:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:05,403 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2416 transitions. [2020-10-26 23:37:05,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:37:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2416 transitions. [2020-10-26 23:37:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-26 23:37:05,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:05,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:05,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:37:05,410 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:05,411 INFO L82 PathProgramCache]: Analyzing trace with hash -515021788, now seen corresponding path program 1 times [2020-10-26 23:37:05,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:05,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5259941] [2020-10-26 23:37:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:10,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:10,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-26 23:37:10,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:37:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:37:10,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:37:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:37:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:37:10,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:10,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:10,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:10,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:10,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:37:10,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:37:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:11,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:11,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:37:11,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-26 23:37:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:37:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:11,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:37:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:11,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:11,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:11,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:37:11,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:37:11,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:37:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:37:12,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5259941] [2020-10-26 23:37:12,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:12,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:12,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401600212] [2020-10-26 23:37:12,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:12,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:12,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:12,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:12,234 INFO L87 Difference]: Start difference. First operand 1952 states and 2416 transitions. Second operand 7 states. [2020-10-26 23:37:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:21,708 INFO L93 Difference]: Finished difference Result 3628 states and 4552 transitions. [2020-10-26 23:37:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:37:21,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-26 23:37:21,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:21,730 INFO L225 Difference]: With dead ends: 3628 [2020-10-26 23:37:21,731 INFO L226 Difference]: Without dead ends: 1989 [2020-10-26 23:37:21,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:37:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2020-10-26 23:37:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1959. [2020-10-26 23:37:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2020-10-26 23:37:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2420 transitions. [2020-10-26 23:37:21,818 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2420 transitions. Word has length 294 [2020-10-26 23:37:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:21,819 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 2420 transitions. [2020-10-26 23:37:21,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2420 transitions. [2020-10-26 23:37:21,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-26 23:37:21,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:21,826 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:21,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:37:21,826 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:21,827 INFO L82 PathProgramCache]: Analyzing trace with hash 622946674, now seen corresponding path program 1 times [2020-10-26 23:37:21,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:21,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886990252] [2020-10-26 23:37:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:26,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:26,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-26 23:37:26,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:37:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4793 [2020-10-26 23:37:26,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:37:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:37:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 314 [2020-10-26 23:37:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:26,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:26,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:37:26,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:37:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:27,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:27,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:27,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:27,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:37:27,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:37:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 23:37:27,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:37:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:37:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:28,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:28,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:37:28,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:37:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-26 23:37:28,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:37:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:37:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:28,848 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-10-26 23:37:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:37:29,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886990252] [2020-10-26 23:37:29,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:29,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:37:29,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529872745] [2020-10-26 23:37:29,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:37:29,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:29,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:37:29,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:37:29,712 INFO L87 Difference]: Start difference. First operand 1959 states and 2420 transitions. Second operand 11 states. [2020-10-26 23:37:30,612 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-10-26 23:37:31,176 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-26 23:37:33,116 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-26 23:37:34,113 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-26 23:37:34,338 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-26 23:37:35,020 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-26 23:37:35,333 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-26 23:37:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:50,497 INFO L93 Difference]: Finished difference Result 2529 states and 3302 transitions. [2020-10-26 23:37:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 23:37:50,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 309 [2020-10-26 23:37:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:50,517 INFO L225 Difference]: With dead ends: 2529 [2020-10-26 23:37:50,518 INFO L226 Difference]: Without dead ends: 2526 [2020-10-26 23:37:50,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:37:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-10-26 23:37:50,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2281. [2020-10-26 23:37:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-26 23:37:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 2991 transitions. [2020-10-26 23:37:50,611 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 2991 transitions. Word has length 309 [2020-10-26 23:37:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:50,612 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 2991 transitions. [2020-10-26 23:37:50,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:37:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 2991 transitions. [2020-10-26 23:37:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-26 23:37:50,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:50,622 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:50,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:37:50,622 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:50,623 INFO L82 PathProgramCache]: Analyzing trace with hash 526887192, now seen corresponding path program 1 times [2020-10-26 23:37:50,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:50,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375769736] [2020-10-26 23:37:50,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:53,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:53,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-26 23:37:53,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:37:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-10-26 23:37:53,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:37:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:37:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:37:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:53,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:53,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:53,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:37:53,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:53,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:54,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:54,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:37:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-26 23:37:54,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:37:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:54,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:37:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:54,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:54,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:54,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:37:54,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:37:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-26 23:37:54,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:37:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:37:55,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375769736] [2020-10-26 23:37:55,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:55,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:55,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488106268] [2020-10-26 23:37:55,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:55,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:55,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:55,026 INFO L87 Difference]: Start difference. First operand 2281 states and 2991 transitions. Second operand 7 states. [2020-10-26 23:38:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:14,907 INFO L93 Difference]: Finished difference Result 6769 states and 9585 transitions. [2020-10-26 23:38:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:38:14,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-26 23:38:14,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:14,929 INFO L225 Difference]: With dead ends: 6769 [2020-10-26 23:38:14,930 INFO L226 Difference]: Without dead ends: 4801 [2020-10-26 23:38:14,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:38:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2020-10-26 23:38:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4794. [2020-10-26 23:38:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4794 states. [2020-10-26 23:38:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 6388 transitions. [2020-10-26 23:38:15,087 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 6388 transitions. Word has length 398 [2020-10-26 23:38:15,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:15,088 INFO L481 AbstractCegarLoop]: Abstraction has 4794 states and 6388 transitions. [2020-10-26 23:38:15,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 6388 transitions. [2020-10-26 23:38:15,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-26 23:38:15,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:15,105 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:15,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:38:15,105 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:15,106 INFO L82 PathProgramCache]: Analyzing trace with hash 979116275, now seen corresponding path program 1 times [2020-10-26 23:38:15,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:15,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378098028] [2020-10-26 23:38:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:20,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:20,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-26 23:38:20,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:38:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 23:38:20,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:38:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:38:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-26 23:38:20,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:38:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:20,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:20,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:20,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:38:20,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:20,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:20,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:38:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:38:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:38:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:20,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:38:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:20,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:21,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:21,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:38:21,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:38:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-26 23:38:21,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:38:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:21,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:38:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:21,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:21,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:38:21,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:38:21,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:38:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:21,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:38:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:21,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:21,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:21,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 23:38:21,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:38:21,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:38:21,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:21,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:21,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:38:21,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:38:21,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 207 proven. 264 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-26 23:38:21,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378098028] [2020-10-26 23:38:21,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:21,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:38:21,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581191506] [2020-10-26 23:38:21,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:38:21,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:21,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:38:21,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:38:21,995 INFO L87 Difference]: Start difference. First operand 4794 states and 6388 transitions. Second operand 9 states. [2020-10-26 23:38:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:47,916 INFO L93 Difference]: Finished difference Result 13742 states and 20523 transitions. [2020-10-26 23:38:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:38:47,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2020-10-26 23:38:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:47,979 INFO L225 Difference]: With dead ends: 13742 [2020-10-26 23:38:47,980 INFO L226 Difference]: Without dead ends: 9258 [2020-10-26 23:38:47,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:38:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2020-10-26 23:38:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 7678. [2020-10-26 23:38:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7678 states. [2020-10-26 23:38:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 10291 transitions. [2020-10-26 23:38:48,386 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 10291 transitions. Word has length 510 [2020-10-26 23:38:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:48,387 INFO L481 AbstractCegarLoop]: Abstraction has 7678 states and 10291 transitions. [2020-10-26 23:38:48,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:38:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 10291 transitions. [2020-10-26 23:38:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-26 23:38:48,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:48,408 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:48,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:38:48,408 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:48,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1370193562, now seen corresponding path program 1 times [2020-10-26 23:38:48,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:48,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791288413] [2020-10-26 23:38:48,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:53,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:53,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-26 23:38:53,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:38:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:38:53,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:38:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:38:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:53,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:53,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:53,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:53,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:38:53,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:53,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:38:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-26 23:38:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:38:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:54,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:38:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:54,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:54,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:38:54,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:54,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 23:38:54,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:38:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:38:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:54,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:54,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 23:38:54,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:38:54,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-26 23:38:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:54,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 130 proven. 110 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-26 23:38:55,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791288413] [2020-10-26 23:38:55,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:55,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:38:55,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430361502] [2020-10-26 23:38:55,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:38:55,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:55,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:38:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:38:55,184 INFO L87 Difference]: Start difference. First operand 7678 states and 10291 transitions. Second operand 8 states. [2020-10-26 23:39:00,388 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:39:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:39:11,410 INFO L93 Difference]: Finished difference Result 16385 states and 22301 transitions. [2020-10-26 23:39:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:39:11,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 529 [2020-10-26 23:39:11,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:39:11,459 INFO L225 Difference]: With dead ends: 16385 [2020-10-26 23:39:11,459 INFO L226 Difference]: Without dead ends: 9020 [2020-10-26 23:39:11,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:39:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states. [2020-10-26 23:39:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 8647. [2020-10-26 23:39:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8647 states. [2020-10-26 23:39:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8647 states to 8647 states and 11349 transitions. [2020-10-26 23:39:11,804 INFO L78 Accepts]: Start accepts. Automaton has 8647 states and 11349 transitions. Word has length 529 [2020-10-26 23:39:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:39:11,805 INFO L481 AbstractCegarLoop]: Abstraction has 8647 states and 11349 transitions. [2020-10-26 23:39:11,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:39:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8647 states and 11349 transitions. [2020-10-26 23:39:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-26 23:39:11,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:39:11,815 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:39:11,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:39:11,815 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:39:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:39:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash 425438942, now seen corresponding path program 1 times [2020-10-26 23:39:11,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:39:11,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746855882] [2020-10-26 23:39:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:39:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:14,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:14,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-26 23:39:14,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:39:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2288 [2020-10-26 23:39:14,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:39:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 23:39:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:39:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:14,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:14,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:39:14,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:39:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:39:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:14,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:14,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:39:14,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:14,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:39:14,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:14,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:14,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:14,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:14,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:14,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:39:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:14,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:14,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:14,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:39:14,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:14,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:39:14,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:14,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:39:14,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:14,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:39:14,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:39:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:39:15,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:39:15,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746855882] [2020-10-26 23:39:15,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:39:15,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:39:15,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349469074] [2020-10-26 23:39:15,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:39:15,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:39:15,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:39:15,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:39:15,291 INFO L87 Difference]: Start difference. First operand 8647 states and 11349 transitions. Second operand 7 states. [2020-10-26 23:39:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:39:29,732 INFO L93 Difference]: Finished difference Result 17435 states and 23875 transitions. [2020-10-26 23:39:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:39:29,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-26 23:39:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:39:29,781 INFO L225 Difference]: With dead ends: 17435 [2020-10-26 23:39:29,782 INFO L226 Difference]: Without dead ends: 9101 [2020-10-26 23:39:29,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:39:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9101 states. [2020-10-26 23:39:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9101 to 9001. [2020-10-26 23:39:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-10-26 23:39:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 11009 transitions. [2020-10-26 23:39:30,081 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 11009 transitions. Word has length 541 [2020-10-26 23:39:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:39:30,083 INFO L481 AbstractCegarLoop]: Abstraction has 9001 states and 11009 transitions. [2020-10-26 23:39:30,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:39:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 11009 transitions. [2020-10-26 23:39:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2020-10-26 23:39:30,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:39:30,096 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:39:30,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:39:30,097 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:39:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:39:30,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1473855940, now seen corresponding path program 1 times [2020-10-26 23:39:30,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:39:30,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560982416] [2020-10-26 23:39:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:39:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:32,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:32,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 583 [2020-10-26 23:39:32,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:39:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2308 [2020-10-26 23:39:32,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:39:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 23:39:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:32,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:39:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:32,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:32,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:39:32,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:32,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:39:32,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:39:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:32,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:32,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:32,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:39:32,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:39:32,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:39:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:33,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:33,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:39:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:39:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:39:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:39:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:39:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:33,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:33,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 23:39:33,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:33,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:39:33,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:33,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:33,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:33,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:39:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:39:33,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560982416] [2020-10-26 23:39:33,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:39:33,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:39:33,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592044661] [2020-10-26 23:39:33,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:39:33,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:39:33,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:39:33,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:39:33,655 INFO L87 Difference]: Start difference. First operand 9001 states and 11009 transitions. Second operand 7 states. [2020-10-26 23:39:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:39:48,300 INFO L93 Difference]: Finished difference Result 16751 states and 21708 transitions. [2020-10-26 23:39:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:39:48,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 567 [2020-10-26 23:39:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:39:48,338 INFO L225 Difference]: With dead ends: 16751 [2020-10-26 23:39:48,339 INFO L226 Difference]: Without dead ends: 10862 [2020-10-26 23:39:48,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:39:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10862 states. [2020-10-26 23:39:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10862 to 10838. [2020-10-26 23:39:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10838 states. [2020-10-26 23:39:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10838 states to 10838 states and 13387 transitions. [2020-10-26 23:39:48,609 INFO L78 Accepts]: Start accepts. Automaton has 10838 states and 13387 transitions. Word has length 567 [2020-10-26 23:39:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:39:48,610 INFO L481 AbstractCegarLoop]: Abstraction has 10838 states and 13387 transitions. [2020-10-26 23:39:48,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:39:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 10838 states and 13387 transitions. [2020-10-26 23:39:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-10-26 23:39:48,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:39:48,622 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:39:48,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:39:48,623 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:39:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:39:48,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1544699878, now seen corresponding path program 1 times [2020-10-26 23:39:48,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:39:48,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884360827] [2020-10-26 23:39:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:39:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:48,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:50,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-26 23:39:50,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-26 23:39:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:39:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-26 23:39:50,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:50,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:39:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:50,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:50,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:50,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:39:50,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:39:50,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:50,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:39:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:50,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:50,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:39:50,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:50,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:39:50,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:50,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:50,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:39:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:39:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:39:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:39:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:39:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:39:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:51,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:51,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-26 23:39:51,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-26 23:39:51,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:51,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:51,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:51,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:39:51,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:39:51,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884360827] [2020-10-26 23:39:51,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:39:51,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:39:51,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672373688] [2020-10-26 23:39:51,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:39:51,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:39:51,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:39:51,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:39:51,535 INFO L87 Difference]: Start difference. First operand 10838 states and 13387 transitions. Second operand 7 states.