/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:00:15,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:00:15,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:00:15,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:00:16,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:00:16,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:00:16,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:00:16,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:00:16,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:00:16,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:00:16,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:00:16,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:00:16,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:00:16,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:00:16,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:00:16,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:00:16,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:00:16,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:00:16,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:00:16,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:00:16,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:00:16,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:00:16,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:00:16,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:00:16,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:00:16,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:00:16,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:00:16,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:00:16,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:00:16,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:00:16,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:00:16,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:00:16,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:00:16,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:00:16,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:00:16,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:00:16,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:00:16,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:00:16,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:00:16,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:00:16,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:00:16,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:00:16,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:00:16,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:00:16,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:00:16,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:00:16,106 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:00:16,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:00:16,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:00:16,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:00:16,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:00:16,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:00:16,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:00:16,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:00:16,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:00:16,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:00:16,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:00:16,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:00:16,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:00:16,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:00:16,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:00:16,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:00:16,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:00:16,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:00:16,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:00:16,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:00:16,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:00:16,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:00:16,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:00:16,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:00:16,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:00:16,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:00:16,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:00:16,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:00:16,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:00:16,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:00:16,668 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:00:16,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label09.c [2020-10-28 13:00:16,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6d083ebf/443243f07eb24f60be163b52fbeb2e72/FLAG73388fdec [2020-10-28 13:00:17,689 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:00:17,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label09.c [2020-10-28 13:00:17,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6d083ebf/443243f07eb24f60be163b52fbeb2e72/FLAG73388fdec [2020-10-28 13:00:17,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6d083ebf/443243f07eb24f60be163b52fbeb2e72 [2020-10-28 13:00:17,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:00:17,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:00:17,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:00:17,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:00:17,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:00:17,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:00:17" (1/1) ... [2020-10-28 13:00:17,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf37451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:17, skipping insertion in model container [2020-10-28 13:00:17,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:00:17" (1/1) ... [2020-10-28 13:00:17,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:00:17,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:00:18,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:00:18,863 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:00:19,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:00:19,341 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:00:19,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19 WrapperNode [2020-10-28 13:00:19,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:00:19,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:00:19,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:00:19,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:00:19,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (1/1) ... [2020-10-28 13:00:19,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (1/1) ... [2020-10-28 13:00:19,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (1/1) ... [2020-10-28 13:00:19,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (1/1) ... [2020-10-28 13:00:19,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (1/1) ... [2020-10-28 13:00:19,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (1/1) ... [2020-10-28 13:00:19,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (1/1) ... [2020-10-28 13:00:19,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:00:19,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:00:19,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:00:19,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:00:19,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:00:19,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:00:19,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:00:19,688 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:00:19,689 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:00:19,689 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:00:19,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:00:19,689 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:00:19,689 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:00:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:00:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:00:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:00:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:00:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:00:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:00:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:00:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:00:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:00:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:00:19,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:00:19,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:00:19,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:00:24,222 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:00:24,222 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:00:24,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:00:24 BoogieIcfgContainer [2020-10-28 13:00:24,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:00:24,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:00:24,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:00:24,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:00:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:00:17" (1/3) ... [2020-10-28 13:00:24,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6dc2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:00:24, skipping insertion in model container [2020-10-28 13:00:24,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:19" (2/3) ... [2020-10-28 13:00:24,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6dc2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:00:24, skipping insertion in model container [2020-10-28 13:00:24,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:00:24" (3/3) ... [2020-10-28 13:00:24,235 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label09.c [2020-10-28 13:00:24,248 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:00:24,254 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:00:24,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:00:24,302 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:00:24,303 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:00:24,303 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:00:24,303 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:00:24,303 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:00:24,303 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:00:24,303 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:00:24,304 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:00:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:00:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 13:00:24,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:24,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:24,341 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:24,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2060813929, now seen corresponding path program 1 times [2020-10-28 13:00:24,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:24,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765995599] [2020-10-28 13:00:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:25,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:25,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 13:00:25,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-28 13:00:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:25,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 13:00:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:00:25,349 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:00:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:25,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:25,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:25,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:25,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:00:25,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:25,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:25,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:25,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765995599] [2020-10-28 13:00:25,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:25,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:00:25,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297446246] [2020-10-28 13:00:25,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:00:25,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:25,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:00:25,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:00:25,474 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:00:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:32,634 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-28 13:00:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:00:32,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-28 13:00:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:32,666 INFO L225 Difference]: With dead ends: 1229 [2020-10-28 13:00:32,666 INFO L226 Difference]: Without dead ends: 709 [2020-10-28 13:00:32,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:00:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-28 13:00:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-28 13:00:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-28 13:00:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-28 13:00:32,809 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 14 [2020-10-28 13:00:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:32,810 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-28 13:00:32,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:00:32,810 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-28 13:00:32,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 13:00:32,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:32,815 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] [2020-10-28 13:00:32,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:00:32,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:32,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1167374850, now seen corresponding path program 1 times [2020-10-28 13:00:32,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:32,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435791436] [2020-10-28 13:00:32,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:34,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:00:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:00:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-10-28 13:00:34,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:34,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:00:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:00:34,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:34,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:34,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:00:34,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:34,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:00:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:34,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:34,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:00:34,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 13:00:34,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:34,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:00:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:34,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435791436] [2020-10-28 13:00:34,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:34,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:00:34,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482755476] [2020-10-28 13:00:34,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:34,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:34,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:34,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:34,952 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 7 states. [2020-10-28 13:00:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:42,950 INFO L93 Difference]: Finished difference Result 1732 states and 2755 transitions. [2020-10-28 13:00:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:00:42,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-10-28 13:00:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:42,959 INFO L225 Difference]: With dead ends: 1732 [2020-10-28 13:00:42,959 INFO L226 Difference]: Without dead ends: 1043 [2020-10-28 13:00:42,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-10-28 13:00:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1005. [2020-10-28 13:00:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-28 13:00:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1356 transitions. [2020-10-28 13:00:43,024 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1356 transitions. Word has length 84 [2020-10-28 13:00:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:43,025 INFO L481 AbstractCegarLoop]: Abstraction has 1005 states and 1356 transitions. [2020-10-28 13:00:43,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:43,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1356 transitions. [2020-10-28 13:00:43,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 13:00:43,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:43,033 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] [2020-10-28 13:00:43,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:00:43,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:43,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:43,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1373311290, now seen corresponding path program 1 times [2020-10-28 13:00:43,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:43,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091595723] [2020-10-28 13:00:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:43,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:43,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:43,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:43,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:00:43,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-28 13:00:43,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:43,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:00:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:43,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:43,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:43,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:43,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:43,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:43,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:00:43,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:43,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:44,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:44,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:00:44,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:44,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:00:44,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:44,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:00:44,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:44,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091595723] [2020-10-28 13:00:44,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:44,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:00:44,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430339038] [2020-10-28 13:00:44,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:44,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:44,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:44,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:44,244 INFO L87 Difference]: Start difference. First operand 1005 states and 1356 transitions. Second operand 7 states. [2020-10-28 13:00:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:53,512 INFO L93 Difference]: Finished difference Result 2376 states and 3359 transitions. [2020-10-28 13:00:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:00:53,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-28 13:00:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:53,523 INFO L225 Difference]: With dead ends: 2376 [2020-10-28 13:00:53,523 INFO L226 Difference]: Without dead ends: 1684 [2020-10-28 13:00:53,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:00:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2020-10-28 13:00:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1342. [2020-10-28 13:00:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2020-10-28 13:00:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1731 transitions. [2020-10-28 13:00:53,574 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1731 transitions. Word has length 88 [2020-10-28 13:00:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:53,575 INFO L481 AbstractCegarLoop]: Abstraction has 1342 states and 1731 transitions. [2020-10-28 13:00:53,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:53,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1731 transitions. [2020-10-28 13:00:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 13:00:53,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:53,579 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] [2020-10-28 13:00:53,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:00:53,580 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:53,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1262528127, now seen corresponding path program 1 times [2020-10-28 13:00:53,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:53,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881007355] [2020-10-28 13:00:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:56,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:56,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:00:56,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:00:56,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2649 [2020-10-28 13:00:56,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:56,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:56,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:56,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:00:56,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:56,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:56,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:56,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:56,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:56,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:00:56,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:56,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:56,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:56,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:56,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:56,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:56,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:00:56,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:56,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-28 13:00:56,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:56,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:00:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:57,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881007355] [2020-10-28 13:00:57,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:57,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:00:57,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488664877] [2020-10-28 13:00:57,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:57,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:57,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:57,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:57,481 INFO L87 Difference]: Start difference. First operand 1342 states and 1731 transitions. Second operand 7 states. [2020-10-28 13:01:09,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:09,041 INFO L93 Difference]: Finished difference Result 3042 states and 3844 transitions. [2020-10-28 13:01:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:01:09,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-28 13:01:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:09,057 INFO L225 Difference]: With dead ends: 3042 [2020-10-28 13:01:09,057 INFO L226 Difference]: Without dead ends: 1706 [2020-10-28 13:01:09,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:01:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-10-28 13:01:09,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1653. [2020-10-28 13:01:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1653 states. [2020-10-28 13:01:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2052 transitions. [2020-10-28 13:01:09,117 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2052 transitions. Word has length 214 [2020-10-28 13:01:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:09,119 INFO L481 AbstractCegarLoop]: Abstraction has 1653 states and 2052 transitions. [2020-10-28 13:01:09,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2052 transitions. [2020-10-28 13:01:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-28 13:01:09,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:09,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:09,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:01:09,126 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:09,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:09,127 INFO L82 PathProgramCache]: Analyzing trace with hash -521936170, now seen corresponding path program 1 times [2020-10-28 13:01:09,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:09,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336519729] [2020-10-28 13:01:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:09,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:11,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:11,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-28 13:01:11,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:11,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-10-28 13:01:11,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:11,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 13:01:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:11,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:11,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:11,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:01:11,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:11,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:11,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:11,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:11,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:11,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-28 13:01:11,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:11,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:11,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:11,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:11,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:01:11,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336519729] [2020-10-28 13:01:11,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:11,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:01:11,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324299730] [2020-10-28 13:01:11,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:01:11,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:11,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:01:11,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:01:11,982 INFO L87 Difference]: Start difference. First operand 1653 states and 2052 transitions. Second operand 5 states. [2020-10-28 13:01:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:20,384 INFO L93 Difference]: Finished difference Result 3935 states and 5065 transitions. [2020-10-28 13:01:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:01:20,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-28 13:01:20,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:20,409 INFO L225 Difference]: With dead ends: 3935 [2020-10-28 13:01:20,409 INFO L226 Difference]: Without dead ends: 2595 [2020-10-28 13:01:20,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:01:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2020-10-28 13:01:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2282. [2020-10-28 13:01:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-10-28 13:01:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2809 transitions. [2020-10-28 13:01:20,504 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2809 transitions. Word has length 288 [2020-10-28 13:01:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:20,505 INFO L481 AbstractCegarLoop]: Abstraction has 2282 states and 2809 transitions. [2020-10-28 13:01:20,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:01:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2809 transitions. [2020-10-28 13:01:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-28 13:01:20,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:20,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:20,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:01:20,535 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:20,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:20,536 INFO L82 PathProgramCache]: Analyzing trace with hash -229320069, now seen corresponding path program 1 times [2020-10-28 13:01:20,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:20,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622327786] [2020-10-28 13:01:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:20,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:23,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-28 13:01:23,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3237 [2020-10-28 13:01:23,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:23,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:01:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:24,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:24,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:24,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:01:24,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:24,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:24,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:24,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:24,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:24,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:24,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:24,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-28 13:01:24,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:24,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:24,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:01:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:24,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:01:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:01:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:24,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:01:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:01:25,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622327786] [2020-10-28 13:01:25,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:25,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:25,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248683987] [2020-10-28 13:01:25,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:25,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:25,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:25,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:25,054 INFO L87 Difference]: Start difference. First operand 2282 states and 2809 transitions. Second operand 7 states. [2020-10-28 13:01:27,709 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:01:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:39,980 INFO L93 Difference]: Finished difference Result 5586 states and 7144 transitions. [2020-10-28 13:01:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:01:39,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-28 13:01:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:40,001 INFO L225 Difference]: With dead ends: 5586 [2020-10-28 13:01:40,001 INFO L226 Difference]: Without dead ends: 3617 [2020-10-28 13:01:40,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:01:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2020-10-28 13:01:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 3259. [2020-10-28 13:01:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3259 states. [2020-10-28 13:01:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 3973 transitions. [2020-10-28 13:01:40,110 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 3973 transitions. Word has length 368 [2020-10-28 13:01:40,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:40,111 INFO L481 AbstractCegarLoop]: Abstraction has 3259 states and 3973 transitions. [2020-10-28 13:01:40,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 3973 transitions. [2020-10-28 13:01:40,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-28 13:01:40,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:40,120 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, 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] [2020-10-28 13:01:40,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:01:40,121 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:40,121 INFO L82 PathProgramCache]: Analyzing trace with hash 25610519, now seen corresponding path program 1 times [2020-10-28 13:01:40,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:40,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959864412] [2020-10-28 13:01:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:44,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:45,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:45,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-28 13:01:45,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:01:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 13:01:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:45,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:01:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:01:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 13:01:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:45,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:45,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:45,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:45,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:45,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:01:45,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:45,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:45,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:45,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:45,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:01:45,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:01:45,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:45,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:01:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:01:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:46,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:46,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:01:46,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:46,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-28 13:01:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:46,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:01:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-28 13:01:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:46,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:46,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:46,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:01:46,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 13:01:46,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:46,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:01:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 13:01:47,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959864412] [2020-10-28 13:01:47,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:47,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:47,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367438301] [2020-10-28 13:01:47,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:47,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:47,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:47,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:47,017 INFO L87 Difference]: Start difference. First operand 3259 states and 3973 transitions. Second operand 7 states. [2020-10-28 13:02:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:04,548 INFO L93 Difference]: Finished difference Result 8789 states and 10993 transitions. [2020-10-28 13:02:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:02:04,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-10-28 13:02:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:04,577 INFO L225 Difference]: With dead ends: 8789 [2020-10-28 13:02:04,578 INFO L226 Difference]: Without dead ends: 5199 [2020-10-28 13:02:04,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:02:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2020-10-28 13:02:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 4557. [2020-10-28 13:02:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-10-28 13:02:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 5280 transitions. [2020-10-28 13:02:04,717 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 5280 transitions. Word has length 389 [2020-10-28 13:02:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:04,718 INFO L481 AbstractCegarLoop]: Abstraction has 4557 states and 5280 transitions. [2020-10-28 13:02:04,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 5280 transitions. [2020-10-28 13:02:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-28 13:02:04,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:04,726 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:04,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:02:04,726 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2056431336, now seen corresponding path program 1 times [2020-10-28 13:02:04,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:04,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981456296] [2020-10-28 13:02:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:05,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:07,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:07,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-28 13:02:07,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:02:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2172 [2020-10-28 13:02:07,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:07,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:02:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:02:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:07,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:07,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:07,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:07,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:02:07,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:07,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:07,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:07,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:07,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:02:07,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-28 13:02:07,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:07,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:02:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:02:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:08,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:08,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:08,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:08,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 13:02:08,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:08,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:08,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:02:08,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:02:08,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981456296] [2020-10-28 13:02:08,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:08,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:02:08,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705827469] [2020-10-28 13:02:08,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:02:08,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:02:08,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:02:08,593 INFO L87 Difference]: Start difference. First operand 4557 states and 5280 transitions. Second operand 8 states. [2020-10-28 13:02:12,305 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:02:28,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:28,475 INFO L93 Difference]: Finished difference Result 11399 states and 13454 transitions. [2020-10-28 13:02:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 13:02:28,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 399 [2020-10-28 13:02:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:28,518 INFO L225 Difference]: With dead ends: 11399 [2020-10-28 13:02:28,518 INFO L226 Difference]: Without dead ends: 7155 [2020-10-28 13:02:28,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 13:02:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7155 states. [2020-10-28 13:02:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7155 to 6493. [2020-10-28 13:02:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6493 states. [2020-10-28 13:02:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 7454 transitions. [2020-10-28 13:02:28,750 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 7454 transitions. Word has length 399 [2020-10-28 13:02:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:28,751 INFO L481 AbstractCegarLoop]: Abstraction has 6493 states and 7454 transitions. [2020-10-28 13:02:28,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:02:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 7454 transitions. [2020-10-28 13:02:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-28 13:02:28,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:28,760 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:28,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:02:28,761 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash 304501344, now seen corresponding path program 1 times [2020-10-28 13:02:28,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:28,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568522467] [2020-10-28 13:02:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:29,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:29,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-28 13:02:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-28 13:02:29,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:29,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 13:02:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:30,012 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:02:30,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:30,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:30,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:30,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:30,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:02:30,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:30,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:30,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:30,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:30,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:30,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:30,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:02:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:30,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:30,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:30,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:30,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:30,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:30,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:02:30,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:30,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:02:30,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568522467] [2020-10-28 13:02:30,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:30,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:02:30,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601123241] [2020-10-28 13:02:30,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:02:30,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:30,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:02:30,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:02:30,733 INFO L87 Difference]: Start difference. First operand 6493 states and 7454 transitions. Second operand 5 states. [2020-10-28 13:02:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:40,379 INFO L93 Difference]: Finished difference Result 14970 states and 17647 transitions. [2020-10-28 13:02:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:02:40,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-10-28 13:02:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:40,427 INFO L225 Difference]: With dead ends: 14970 [2020-10-28 13:02:40,428 INFO L226 Difference]: Without dead ends: 8790 [2020-10-28 13:02:40,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:02:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8790 states. [2020-10-28 13:02:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8790 to 8774. [2020-10-28 13:02:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8774 states. [2020-10-28 13:02:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8774 states to 8774 states and 10339 transitions. [2020-10-28 13:02:40,707 INFO L78 Accepts]: Start accepts. Automaton has 8774 states and 10339 transitions. Word has length 411 [2020-10-28 13:02:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:40,708 INFO L481 AbstractCegarLoop]: Abstraction has 8774 states and 10339 transitions. [2020-10-28 13:02:40,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:02:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8774 states and 10339 transitions. [2020-10-28 13:02:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-28 13:02:40,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:40,724 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:40,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:02:40,725 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:40,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2075226701, now seen corresponding path program 1 times [2020-10-28 13:02:40,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:40,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756303562] [2020-10-28 13:02:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:41,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:44,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-28 13:02:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:02:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3243 [2020-10-28 13:02:44,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:44,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:02:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:44,368 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:02:44,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:44,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:44,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:44,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:02:44,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:44,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:44,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:44,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:44,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:44,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:44,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:02:44,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:44,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:02:44,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:44,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:44,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:44,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:44,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:44,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:02:44,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:44,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:44,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:45,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:45,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:02:45,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:45,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 13:02:45,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:45,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:02:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:02:45,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756303562] [2020-10-28 13:02:45,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:45,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:45,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770489987] [2020-10-28 13:02:45,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:45,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:45,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:45,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:45,452 INFO L87 Difference]: Start difference. First operand 8774 states and 10339 transitions. Second operand 7 states. [2020-10-28 13:02:45,602 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:02:49,725 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:02:58,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:58,340 INFO L93 Difference]: Finished difference Result 20692 states and 25015 transitions. [2020-10-28 13:02:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:02:58,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2020-10-28 13:02:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:58,408 INFO L225 Difference]: With dead ends: 20692 [2020-10-28 13:02:58,408 INFO L226 Difference]: Without dead ends: 12231 [2020-10-28 13:02:58,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:02:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12231 states. [2020-10-28 13:02:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12231 to 10624. [2020-10-28 13:02:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10624 states. [2020-10-28 13:02:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10624 states to 10624 states and 12778 transitions. [2020-10-28 13:02:58,908 INFO L78 Accepts]: Start accepts. Automaton has 10624 states and 12778 transitions. Word has length 487 [2020-10-28 13:02:58,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:58,910 INFO L481 AbstractCegarLoop]: Abstraction has 10624 states and 12778 transitions. [2020-10-28 13:02:58,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 10624 states and 12778 transitions. [2020-10-28 13:02:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-28 13:02:58,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:58,918 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:58,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:02:58,919 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:58,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:58,920 INFO L82 PathProgramCache]: Analyzing trace with hash -438189087, now seen corresponding path program 1 times [2020-10-28 13:02:58,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:58,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629498749] [2020-10-28 13:02:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:02,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:02,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-28 13:03:02,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3142 [2020-10-28 13:03:02,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:02,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:03:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:03:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 13:03:02,477 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:03:02,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:02,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:02,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:02,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:03:02,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:02,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:02,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:02,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:02,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:03:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:02,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:03,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:03,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:03:03,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:03:03,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:03,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:03:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:03,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:03:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:03,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:04,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:04,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:03:04,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 933 [2020-10-28 13:03:04,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:04,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:03:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:03:04,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629498749] [2020-10-28 13:03:04,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:04,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:03:04,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773732146] [2020-10-28 13:03:04,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:03:04,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:04,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:03:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:03:04,352 INFO L87 Difference]: Start difference. First operand 10624 states and 12778 transitions. Second operand 8 states. [2020-10-28 13:03:04,509 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:03:08,337 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:03:18,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:18,708 INFO L93 Difference]: Finished difference Result 21326 states and 25715 transitions. [2020-10-28 13:03:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:03:18,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 493 [2020-10-28 13:03:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:18,785 INFO L225 Difference]: With dead ends: 21326 [2020-10-28 13:03:18,785 INFO L226 Difference]: Without dead ends: 11015 [2020-10-28 13:03:18,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:03:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11015 states. [2020-10-28 13:03:19,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11015 to 10646. [2020-10-28 13:03:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10646 states. [2020-10-28 13:03:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 12287 transitions. [2020-10-28 13:03:19,143 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 12287 transitions. Word has length 493 [2020-10-28 13:03:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:19,144 INFO L481 AbstractCegarLoop]: Abstraction has 10646 states and 12287 transitions. [2020-10-28 13:03:19,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:03:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 12287 transitions. [2020-10-28 13:03:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-28 13:03:19,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:19,154 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:19,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:03:19,154 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:19,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash 507558498, now seen corresponding path program 1 times [2020-10-28 13:03:19,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:19,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882410720] [2020-10-28 13:03:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:21,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 521 [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2559 [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 13:03:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:22,181 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:03:22,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:22,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:22,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:22,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:22,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:22,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:03:22,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:22,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:22,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:22,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:22,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:03:22,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:22,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:22,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:22,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:22,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:03:22,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:03:22,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:22,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:03:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:03:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:22,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:22,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 13:03:22,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:22,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 13:03:22,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:22,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:03:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:03:23,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882410720] [2020-10-28 13:03:23,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:23,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:23,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579821537] [2020-10-28 13:03:23,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:23,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:23,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:23,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:23,303 INFO L87 Difference]: Start difference. First operand 10646 states and 12287 transitions. Second operand 7 states. [2020-10-28 13:03:26,226 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:03:28,256 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:03:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:36,778 INFO L93 Difference]: Finished difference Result 24189 states and 28521 transitions. [2020-10-28 13:03:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:36,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 505 [2020-10-28 13:03:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:36,825 INFO L225 Difference]: With dead ends: 24189 [2020-10-28 13:03:36,825 INFO L226 Difference]: Without dead ends: 13856 [2020-10-28 13:03:36,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13856 states. [2020-10-28 13:03:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13856 to 13489. [2020-10-28 13:03:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13489 states. [2020-10-28 13:03:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 15561 transitions. [2020-10-28 13:03:37,180 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 15561 transitions. Word has length 505 [2020-10-28 13:03:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:37,182 INFO L481 AbstractCegarLoop]: Abstraction has 13489 states and 15561 transitions. [2020-10-28 13:03:37,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 15561 transitions. [2020-10-28 13:03:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-28 13:03:37,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:37,191 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:03:37,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:03:37,191 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash -915958523, now seen corresponding path program 1 times [2020-10-28 13:03:37,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:37,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772858818] [2020-10-28 13:03:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:41,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:41,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-28 13:03:41,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3756 [2020-10-28 13:03:41,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:41,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:03:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:03:41,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:41,335 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:03:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:41,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:41,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:03:41,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:41,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:41,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:41,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:41,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:41,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:41,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:41,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:41,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:03:41,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 13:03:41,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:41,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:03:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:03:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:42,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:42,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:42,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:03:42,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:42,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:03:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-28 13:03:42,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772858818] [2020-10-28 13:03:42,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:42,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:42,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165118176] [2020-10-28 13:03:42,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:42,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:42,422 INFO L87 Difference]: Start difference. First operand 13489 states and 15561 transitions. Second operand 7 states. [2020-10-28 13:03:45,666 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:03:47,725 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:04:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:01,549 INFO L93 Difference]: Finished difference Result 35106 states and 41044 transitions. [2020-10-28 13:04:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:04:01,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 573 [2020-10-28 13:04:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:01,633 INFO L225 Difference]: With dead ends: 35106 [2020-10-28 13:04:01,633 INFO L226 Difference]: Without dead ends: 21930