/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:44:41,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:44:41,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:44:41,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:44:41,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:44:41,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:44:41,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:44:41,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:44:41,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:44:41,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:44:41,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:44:41,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:44:41,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:44:41,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:44:41,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:44:41,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:44:41,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:44:41,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:44:41,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:44:41,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:44:41,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:44:41,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:44:41,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:44:41,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:44:42,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:44:42,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:44:42,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:44:42,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:44:42,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:44:42,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:44:42,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:44:42,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:44:42,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:44:42,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:44:42,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:44:42,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:44:42,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:44:42,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:44:42,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:44:42,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:44:42,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:44:42,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:44:42,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:44:42,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:44:42,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:44:42,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:44:42,098 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:44:42,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:44:42,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:44:42,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:44:42,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:44:42,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:44:42,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:44:42,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:44:42,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:44:42,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:44:42,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:44:42,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:44:42,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:44:42,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:44:42,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:44:42,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:44:42,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:44:42,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:44:42,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:44:42,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:44:42,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:44:42,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:44:42,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:44:42,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:44:42,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:44:42,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:44:42,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:44:42,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:44:42,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:44:42,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:44:42,525 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:44:42,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21.c [2020-10-29 07:44:42,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2611281/ed9fb45c934243b38db5c10e6a67dd6f/FLAG3b7878344 [2020-10-29 07:44:43,510 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:44:43,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label21.c [2020-10-29 07:44:43,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2611281/ed9fb45c934243b38db5c10e6a67dd6f/FLAG3b7878344 [2020-10-29 07:44:43,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2611281/ed9fb45c934243b38db5c10e6a67dd6f [2020-10-29 07:44:43,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:44:43,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:44:43,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:44:43,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:44:43,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:44:43,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:44:43" (1/1) ... [2020-10-29 07:44:43,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e2b8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:43, skipping insertion in model container [2020-10-29 07:44:43,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:44:43" (1/1) ... [2020-10-29 07:44:43,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:44:43,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:44:44,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:44:44,845 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:44:45,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:44:45,395 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:44:45,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45 WrapperNode [2020-10-29 07:44:45,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:44:45,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:44:45,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:44:45,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:44:45,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (1/1) ... [2020-10-29 07:44:45,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (1/1) ... [2020-10-29 07:44:45,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (1/1) ... [2020-10-29 07:44:45,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (1/1) ... [2020-10-29 07:44:45,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (1/1) ... [2020-10-29 07:44:45,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (1/1) ... [2020-10-29 07:44:45,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (1/1) ... [2020-10-29 07:44:45,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:44:45,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:44:45,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:44:45,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:44:45,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:44:45,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:44:45,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:44:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:44:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:44:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:44:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:44:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:44:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:44:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:44:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:44:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:44:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:44:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:44:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:44:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:44:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:44:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:44:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:44:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:44:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:44:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:44:49,220 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:44:49,220 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:44:49,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:44:49 BoogieIcfgContainer [2020-10-29 07:44:49,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:44:49,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:44:49,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:44:49,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:44:49,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:44:43" (1/3) ... [2020-10-29 07:44:49,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0d48cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:44:49, skipping insertion in model container [2020-10-29 07:44:49,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:45" (2/3) ... [2020-10-29 07:44:49,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0d48cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:44:49, skipping insertion in model container [2020-10-29 07:44:49,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:44:49" (3/3) ... [2020-10-29 07:44:49,233 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label21.c [2020-10-29 07:44:49,246 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:44:49,253 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:44:49,268 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:44:49,301 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:44:49,301 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:44:49,301 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:44:49,302 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:44:49,302 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:44:49,302 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:44:49,302 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:44:49,302 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:44:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:44:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 07:44:49,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:49,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:49,348 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:49,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1868936201, now seen corresponding path program 1 times [2020-10-29 07:44:49,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:49,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135054949] [2020-10-29 07:44:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:50,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:50,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:44:50,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:50,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-29 07:44:50,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:50,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:44:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:44:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:50,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:50,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:50,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:50,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:50,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:44:50,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:50,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:50,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:44:50,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135054949] [2020-10-29 07:44:50,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:44:50,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:44:50,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110374531] [2020-10-29 07:44:50,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:44:50,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:50,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:44:50,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:44:50,704 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:44:56,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:56,764 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-29 07:44:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:44:56,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-29 07:44:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:56,788 INFO L225 Difference]: With dead ends: 1229 [2020-10-29 07:44:56,788 INFO L226 Difference]: Without dead ends: 709 [2020-10-29 07:44:56,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:44:56,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-29 07:44:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-29 07:44:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-29 07:44:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-29 07:44:56,914 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 67 [2020-10-29 07:44:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:56,915 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-29 07:44:56,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:44:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-29 07:44:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 07:44:56,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:56,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:44:56,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:44:56,923 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:56,924 INFO L82 PathProgramCache]: Analyzing trace with hash -288530017, now seen corresponding path program 1 times [2020-10-29 07:44:56,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:56,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643911799] [2020-10-29 07:44:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:44:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2080 [2020-10-29 07:44:59,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:44:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:44:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:59,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:59,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:44:59,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:59,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:59,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:44:59,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 07:44:59,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:59,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:44:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:44:59,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643911799] [2020-10-29 07:44:59,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:59,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:44:59,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413115038] [2020-10-29 07:44:59,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:44:59,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:44:59,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:44:59,476 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 5 states. [2020-10-29 07:45:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:06,304 INFO L93 Difference]: Finished difference Result 1397 states and 2301 transitions. [2020-10-29 07:45:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:45:06,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-29 07:45:06,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:06,320 INFO L225 Difference]: With dead ends: 1397 [2020-10-29 07:45:06,321 INFO L226 Difference]: Without dead ends: 1023 [2020-10-29 07:45:06,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:45:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-29 07:45:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1017. [2020-10-29 07:45:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-10-29 07:45:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1467 transitions. [2020-10-29 07:45:06,424 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1467 transitions. Word has length 137 [2020-10-29 07:45:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:06,429 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1467 transitions. [2020-10-29 07:45:06,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:45:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1467 transitions. [2020-10-29 07:45:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 07:45:06,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:06,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:45:06,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:45:06,443 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:06,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1935298371, now seen corresponding path program 1 times [2020-10-29 07:45:06,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:06,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395985108] [2020-10-29 07:45:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:08,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:08,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 07:45:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:45:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1749 [2020-10-29 07:45:08,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:08,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 07:45:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:45:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:45:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:08,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:08,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:08,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:45:08,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:08,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:08,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:08,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:08,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:08,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:45:08,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 07:45:08,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:08,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 07:45:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:08,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395985108] [2020-10-29 07:45:08,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:08,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:45:08,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241748811] [2020-10-29 07:45:08,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:45:08,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:08,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:45:08,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:45:08,668 INFO L87 Difference]: Start difference. First operand 1017 states and 1467 transitions. Second operand 5 states. [2020-10-29 07:45:15,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:15,977 INFO L93 Difference]: Finished difference Result 2362 states and 3468 transitions. [2020-10-29 07:45:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:45:15,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-29 07:45:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:15,993 INFO L225 Difference]: With dead ends: 2362 [2020-10-29 07:45:15,993 INFO L226 Difference]: Without dead ends: 1666 [2020-10-29 07:45:15,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:45:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2020-10-29 07:45:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1652. [2020-10-29 07:45:16,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-10-29 07:45:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2270 transitions. [2020-10-29 07:45:16,062 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2270 transitions. Word has length 139 [2020-10-29 07:45:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:16,063 INFO L481 AbstractCegarLoop]: Abstraction has 1652 states and 2270 transitions. [2020-10-29 07:45:16,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:45:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2270 transitions. [2020-10-29 07:45:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 07:45:16,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:16,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:45:16,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:45:16,067 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:16,067 INFO L82 PathProgramCache]: Analyzing trace with hash -941988633, now seen corresponding path program 1 times [2020-10-29 07:45:16,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:16,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909931129] [2020-10-29 07:45:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:17,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:17,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 07:45:17,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:45:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-29 07:45:17,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:17,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:45:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:45:17,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:17,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:17,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:17,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:45:17,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:17,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:17,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:45:17,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:45:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:17,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 07:45:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:17,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909931129] [2020-10-29 07:45:17,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:17,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:45:17,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100220498] [2020-10-29 07:45:17,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:45:17,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:17,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:45:17,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:45:17,857 INFO L87 Difference]: Start difference. First operand 1652 states and 2270 transitions. Second operand 5 states. [2020-10-29 07:45:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:30,483 INFO L93 Difference]: Finished difference Result 4243 states and 6003 transitions. [2020-10-29 07:45:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:45:30,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-29 07:45:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:30,503 INFO L225 Difference]: With dead ends: 4243 [2020-10-29 07:45:30,503 INFO L226 Difference]: Without dead ends: 2597 [2020-10-29 07:45:30,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:45:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-10-29 07:45:30,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2595. [2020-10-29 07:45:30,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2595 states. [2020-10-29 07:45:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 3354 transitions. [2020-10-29 07:45:30,629 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 3354 transitions. Word has length 141 [2020-10-29 07:45:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:30,629 INFO L481 AbstractCegarLoop]: Abstraction has 2595 states and 3354 transitions. [2020-10-29 07:45:30,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:45:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 3354 transitions. [2020-10-29 07:45:30,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 07:45:30,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:30,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:45:30,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:45:30,633 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:30,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1379614764, now seen corresponding path program 1 times [2020-10-29 07:45:30,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:30,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406400477] [2020-10-29 07:45:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:31,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:32,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:32,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 07:45:32,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:45:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1989 [2020-10-29 07:45:32,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:32,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:45:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 07:45:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:32,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:32,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:32,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:45:32,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:32,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:32,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:32,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:33,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:33,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:45:33,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 07:45:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:33,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:45:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:45:33,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406400477] [2020-10-29 07:45:33,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:33,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:45:33,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395722382] [2020-10-29 07:45:33,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:33,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:33,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:33,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:33,267 INFO L87 Difference]: Start difference. First operand 2595 states and 3354 transitions. Second operand 7 states. [2020-10-29 07:45:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:46,671 INFO L93 Difference]: Finished difference Result 5539 states and 7447 transitions. [2020-10-29 07:45:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:45:46,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-29 07:45:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:46,692 INFO L225 Difference]: With dead ends: 5539 [2020-10-29 07:45:46,693 INFO L226 Difference]: Without dead ends: 2950 [2020-10-29 07:45:46,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:45:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-10-29 07:45:46,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2307. [2020-10-29 07:45:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2307 states. [2020-10-29 07:45:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2938 transitions. [2020-10-29 07:45:46,803 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2938 transitions. Word has length 142 [2020-10-29 07:45:46,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:46,803 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 2938 transitions. [2020-10-29 07:45:46,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2938 transitions. [2020-10-29 07:45:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 07:45:46,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:46,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:45:46,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:45:46,806 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:46,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:46,807 INFO L82 PathProgramCache]: Analyzing trace with hash 266966483, now seen corresponding path program 1 times [2020-10-29 07:45:46,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:46,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983681955] [2020-10-29 07:45:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:48,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:48,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 07:45:48,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:48,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-29 07:45:48,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:48,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 07:45:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:45:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:48,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:48,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:45:48,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:48,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:48,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:48,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:48,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:45:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 07:45:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:48,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:45:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:48,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983681955] [2020-10-29 07:45:48,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:48,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:45:48,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006880963] [2020-10-29 07:45:48,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:45:48,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:45:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:45:48,487 INFO L87 Difference]: Start difference. First operand 2307 states and 2938 transitions. Second operand 5 states. [2020-10-29 07:46:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:00,122 INFO L93 Difference]: Finished difference Result 5630 states and 7412 transitions. [2020-10-29 07:46:00,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:46:00,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-29 07:46:00,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:00,147 INFO L225 Difference]: With dead ends: 5630 [2020-10-29 07:46:00,147 INFO L226 Difference]: Without dead ends: 3637 [2020-10-29 07:46:00,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:46:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2020-10-29 07:46:00,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3632. [2020-10-29 07:46:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3632 states. [2020-10-29 07:46:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 4712 transitions. [2020-10-29 07:46:00,267 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 4712 transitions. Word has length 147 [2020-10-29 07:46:00,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:00,268 INFO L481 AbstractCegarLoop]: Abstraction has 3632 states and 4712 transitions. [2020-10-29 07:46:00,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:46:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 4712 transitions. [2020-10-29 07:46:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 07:46:00,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:00,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:46:00,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:46:00,272 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1301947549, now seen corresponding path program 1 times [2020-10-29 07:46:00,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:00,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267855154] [2020-10-29 07:46:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:46:00,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-29 07:46:00,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:46:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:46:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:46:00,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:00,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:00,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:46:00,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:46:00,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:46:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:46:01,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267855154] [2020-10-29 07:46:01,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:01,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:46:01,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372846401] [2020-10-29 07:46:01,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:46:01,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:01,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:46:01,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:46:01,143 INFO L87 Difference]: Start difference. First operand 3632 states and 4712 transitions. Second operand 5 states. [2020-10-29 07:46:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:12,735 INFO L93 Difference]: Finished difference Result 8204 states and 11074 transitions. [2020-10-29 07:46:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:46:12,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-29 07:46:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:12,760 INFO L225 Difference]: With dead ends: 8204 [2020-10-29 07:46:12,761 INFO L226 Difference]: Without dead ends: 4886 [2020-10-29 07:46:12,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:46:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2020-10-29 07:46:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4886. [2020-10-29 07:46:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4886 states. [2020-10-29 07:46:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 6176 transitions. [2020-10-29 07:46:12,918 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 6176 transitions. Word has length 162 [2020-10-29 07:46:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:12,918 INFO L481 AbstractCegarLoop]: Abstraction has 4886 states and 6176 transitions. [2020-10-29 07:46:12,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:46:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 6176 transitions. [2020-10-29 07:46:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 07:46:12,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:12,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:46:12,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:46:12,922 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:12,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:12,923 INFO L82 PathProgramCache]: Analyzing trace with hash 535697498, now seen corresponding path program 1 times [2020-10-29 07:46:12,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:12,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415612878] [2020-10-29 07:46:12,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:12,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:15,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:15,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 07:46:15,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-29 07:46:15,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:15,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:46:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:46:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:46:15,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:15,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:15,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:15,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:15,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:46:15,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:15,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:15,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:15,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:15,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:15,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 07:46:15,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:15,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 07:46:15,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:15,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:46:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:46:15,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415612878] [2020-10-29 07:46:15,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:46:15,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:46:15,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078292930] [2020-10-29 07:46:15,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:15,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:15,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:15,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:15,760 INFO L87 Difference]: Start difference. First operand 4886 states and 6176 transitions. Second operand 7 states. [2020-10-29 07:46:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:30,957 INFO L93 Difference]: Finished difference Result 12708 states and 16591 transitions. [2020-10-29 07:46:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:46:30,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-29 07:46:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:31,009 INFO L225 Difference]: With dead ends: 12708 [2020-10-29 07:46:31,010 INFO L226 Difference]: Without dead ends: 8135 [2020-10-29 07:46:31,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:46:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8135 states. [2020-10-29 07:46:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8135 to 7772. [2020-10-29 07:46:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7772 states. [2020-10-29 07:46:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7772 states to 7772 states and 9473 transitions. [2020-10-29 07:46:31,276 INFO L78 Accepts]: Start accepts. Automaton has 7772 states and 9473 transitions. Word has length 170 [2020-10-29 07:46:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:31,277 INFO L481 AbstractCegarLoop]: Abstraction has 7772 states and 9473 transitions. [2020-10-29 07:46:31,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 7772 states and 9473 transitions. [2020-10-29 07:46:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-29 07:46:31,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:31,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:31,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:46:31,286 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:31,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1259528579, now seen corresponding path program 1 times [2020-10-29 07:46:31,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:31,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278569806] [2020-10-29 07:46:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:36,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:36,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-29 07:46:36,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 07:46:36,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 07:46:36,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:36,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:46:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 07:46:36,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:36,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:36,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:36,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:46:36,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:36,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:36,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:36,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:36,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:46:36,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 07:46:36,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:36,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:36,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:46:36,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:36,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:46:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:37,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:37,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 07:46:37,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:37,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 07:46:37,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:37,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:37,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:37,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:37,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:46:37,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:46:37,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278569806] [2020-10-29 07:46:37,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:37,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:46:37,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267420903] [2020-10-29 07:46:37,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:37,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:37,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:37,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:37,500 INFO L87 Difference]: Start difference. First operand 7772 states and 9473 transitions. Second operand 7 states. [2020-10-29 07:46:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:49,429 INFO L93 Difference]: Finished difference Result 19742 states and 24385 transitions. [2020-10-29 07:46:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:49,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-29 07:46:49,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:49,475 INFO L225 Difference]: With dead ends: 19742 [2020-10-29 07:46:49,475 INFO L226 Difference]: Without dead ends: 9741 [2020-10-29 07:46:49,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9741 states. [2020-10-29 07:46:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9741 to 9644. [2020-10-29 07:46:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9644 states. [2020-10-29 07:46:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9644 states to 9644 states and 11063 transitions. [2020-10-29 07:46:49,812 INFO L78 Accepts]: Start accepts. Automaton has 9644 states and 11063 transitions. Word has length 285 [2020-10-29 07:46:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:49,813 INFO L481 AbstractCegarLoop]: Abstraction has 9644 states and 11063 transitions. [2020-10-29 07:46:49,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9644 states and 11063 transitions. [2020-10-29 07:46:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-29 07:46:49,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:49,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:46:49,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:46:49,821 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:49,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1758480, now seen corresponding path program 1 times [2020-10-29 07:46:49,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:49,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720245239] [2020-10-29 07:46:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:50,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:50,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:52,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:52,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-29 07:46:52,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2453 [2020-10-29 07:46:52,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:52,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:46:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:46:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-29 07:46:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:52,672 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:46:52,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:46:52,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:52,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:46:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:53,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:53,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:46:53,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-29 07:46:53,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:53,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:46:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 07:46:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 25 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:46:53,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720245239] [2020-10-29 07:46:53,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:53,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:53,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339000695] [2020-10-29 07:46:53,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:46:53,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:53,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:46:53,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:53,700 INFO L87 Difference]: Start difference. First operand 9644 states and 11063 transitions. Second operand 8 states. [2020-10-29 07:46:55,986 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 07:47:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:06,380 INFO L93 Difference]: Finished difference Result 20293 states and 23231 transitions. [2020-10-29 07:47:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:47:06,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 304 [2020-10-29 07:47:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:06,420 INFO L225 Difference]: With dead ends: 20293 [2020-10-29 07:47:06,421 INFO L226 Difference]: Without dead ends: 10618 [2020-10-29 07:47:06,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2020-10-29 07:47:06,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 10573. [2020-10-29 07:47:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10573 states. [2020-10-29 07:47:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10573 states to 10573 states and 12062 transitions. [2020-10-29 07:47:06,805 INFO L78 Accepts]: Start accepts. Automaton has 10573 states and 12062 transitions. Word has length 304 [2020-10-29 07:47:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:06,806 INFO L481 AbstractCegarLoop]: Abstraction has 10573 states and 12062 transitions. [2020-10-29 07:47:06,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:47:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10573 states and 12062 transitions. [2020-10-29 07:47:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-29 07:47:06,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:06,817 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:06,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:47:06,818 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:06,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:06,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1066947152, now seen corresponding path program 1 times [2020-10-29 07:47:06,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:06,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623114992] [2020-10-29 07:47:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:07,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:09,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:11,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:47:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:12,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:12,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:47:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:47:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:47:12,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:12,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-29 07:47:12,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:12,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:47:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:12,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:47:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:12,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:47:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:47:12,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:12,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 07:47:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 118 proven. 86 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:47:13,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623114992] [2020-10-29 07:47:13,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:13,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:13,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478887337] [2020-10-29 07:47:13,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:13,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:13,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:13,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:13,037 INFO L87 Difference]: Start difference. First operand 10573 states and 12062 transitions. Second operand 7 states. [2020-10-29 07:47:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:22,926 INFO L93 Difference]: Finished difference Result 22521 states and 25764 transitions. [2020-10-29 07:47:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:47:22,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-29 07:47:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:22,970 INFO L225 Difference]: With dead ends: 22521 [2020-10-29 07:47:22,971 INFO L226 Difference]: Without dead ends: 12261 [2020-10-29 07:47:22,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:47:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12261 states. [2020-10-29 07:47:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12261 to 12152. [2020-10-29 07:47:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12152 states. [2020-10-29 07:47:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12152 states to 12152 states and 13754 transitions. [2020-10-29 07:47:23,322 INFO L78 Accepts]: Start accepts. Automaton has 12152 states and 13754 transitions. Word has length 358 [2020-10-29 07:47:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:23,322 INFO L481 AbstractCegarLoop]: Abstraction has 12152 states and 13754 transitions. [2020-10-29 07:47:23,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 12152 states and 13754 transitions. [2020-10-29 07:47:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-29 07:47:23,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:23,333 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:23,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:47:23,333 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash -508894962, now seen corresponding path program 1 times [2020-10-29 07:47:23,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:23,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145673934] [2020-10-29 07:47:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:24,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:25,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:26,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-29 07:47:26,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:47:26,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2988 [2020-10-29 07:47:26,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:26,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:47:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 07:47:26,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:26,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:26,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:47:26,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:26,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:26,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:26,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:26,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:26,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 07:47:26,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:26,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:47:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:47:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:27,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 07:47:27,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:47:27,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:27,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 07:47:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:47:27,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145673934] [2020-10-29 07:47:27,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:27,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:27,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748683116] [2020-10-29 07:47:27,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:27,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:27,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:27,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:27,629 INFO L87 Difference]: Start difference. First operand 12152 states and 13754 transitions. Second operand 7 states. [2020-10-29 07:47:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:41,081 INFO L93 Difference]: Finished difference Result 29099 states and 33856 transitions. [2020-10-29 07:47:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:47:41,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-10-29 07:47:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:41,136 INFO L225 Difference]: With dead ends: 29099 [2020-10-29 07:47:41,137 INFO L226 Difference]: Without dead ends: 17260 [2020-10-29 07:47:41,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:47:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17260 states. [2020-10-29 07:47:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17260 to 17181. [2020-10-29 07:47:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17181 states. [2020-10-29 07:47:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17181 states to 17181 states and 19275 transitions. [2020-10-29 07:47:41,509 INFO L78 Accepts]: Start accepts. Automaton has 17181 states and 19275 transitions. Word has length 437 [2020-10-29 07:47:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:41,510 INFO L481 AbstractCegarLoop]: Abstraction has 17181 states and 19275 transitions. [2020-10-29 07:47:41,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 17181 states and 19275 transitions. [2020-10-29 07:47:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-29 07:47:41,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:41,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:41,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:47:41,525 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:41,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1528174606, now seen corresponding path program 1 times [2020-10-29 07:47:41,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:41,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74381776] [2020-10-29 07:47:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:46,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:47:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:46,949 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:47:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:46,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:46,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:46,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:47:46,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:46,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:47,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:47,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:47,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:47,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:47:47,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:47,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:47,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:47:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:47,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:47,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:47,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:47:47,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:47,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:47:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:47,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:47:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:47,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:47,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:47:47,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 07:47:47,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:47,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:47:47,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:47:47,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74381776] [2020-10-29 07:47:47,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:47,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:47,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783827210] [2020-10-29 07:47:47,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:47,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:47,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:47,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:47,782 INFO L87 Difference]: Start difference. First operand 17181 states and 19275 transitions. Second operand 7 states. [2020-10-29 07:47:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:58,406 INFO L93 Difference]: Finished difference Result 39423 states and 45316 transitions. [2020-10-29 07:47:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:47:58,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 530 [2020-10-29 07:47:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:58,480 INFO L225 Difference]: With dead ends: 39423 [2020-10-29 07:47:58,481 INFO L226 Difference]: Without dead ends: 22555 [2020-10-29 07:47:58,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:58,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22555 states. [2020-10-29 07:47:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22555 to 22505. [2020-10-29 07:47:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22505 states. [2020-10-29 07:47:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22505 states to 22505 states and 25639 transitions. [2020-10-29 07:47:59,173 INFO L78 Accepts]: Start accepts. Automaton has 22505 states and 25639 transitions. Word has length 530 [2020-10-29 07:47:59,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:59,175 INFO L481 AbstractCegarLoop]: Abstraction has 22505 states and 25639 transitions. [2020-10-29 07:47:59,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 22505 states and 25639 transitions. [2020-10-29 07:47:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-10-29 07:47:59,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:59,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:59,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:47:59,194 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2084269760, now seen corresponding path program 1 times [2020-10-29 07:47:59,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:59,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322419858] [2020-10-29 07:47:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:59,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:03,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:03,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-29 07:48:03,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:48:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296 [2020-10-29 07:48:03,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:03,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:48:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:48:03,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:03,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:03,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:03,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:03,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:48:03,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:03,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:03,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:04,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:48:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:04,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:04,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:04,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:04,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:48:04,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:04,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:48:04,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:04,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:48:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:04,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:48:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:48:04,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322419858] [2020-10-29 07:48:04,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:04,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:48:04,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168394891] [2020-10-29 07:48:04,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:04,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:04,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:04,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:04,584 INFO L87 Difference]: Start difference. First operand 22505 states and 25639 transitions. Second operand 7 states. [2020-10-29 07:48:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:16,905 INFO L93 Difference]: Finished difference Result 44761 states and 51044 transitions. [2020-10-29 07:48:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:48:16,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 545 [2020-10-29 07:48:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:16,964 INFO L225 Difference]: With dead ends: 44761 [2020-10-29 07:48:16,965 INFO L226 Difference]: Without dead ends: 22569 [2020-10-29 07:48:16,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:48:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22569 states. [2020-10-29 07:48:17,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22569 to 22523. [2020-10-29 07:48:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22523 states. [2020-10-29 07:48:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22523 states to 22523 states and 25186 transitions. [2020-10-29 07:48:17,422 INFO L78 Accepts]: Start accepts. Automaton has 22523 states and 25186 transitions. Word has length 545 [2020-10-29 07:48:17,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:17,424 INFO L481 AbstractCegarLoop]: Abstraction has 22523 states and 25186 transitions. [2020-10-29 07:48:17,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 22523 states and 25186 transitions. [2020-10-29 07:48:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-29 07:48:17,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:17,433 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:17,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:48:17,434 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:17,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1429082217, now seen corresponding path program 1 times [2020-10-29 07:48:17,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:17,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044669834] [2020-10-29 07:48:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:17,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:22,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:22,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-29 07:48:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:48:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 07:48:22,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:22,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:48:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:48:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:22,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:22,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:22,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:48:22,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:22,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:22,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:23,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:23,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:48:23,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 07:48:23,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:23,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:48:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:48:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:23,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:23,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:23,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 07:48:23,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:23,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:48:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:48:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 289 proven. 100 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-29 07:48:24,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044669834] [2020-10-29 07:48:24,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:24,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:48:24,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957312979] [2020-10-29 07:48:24,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:24,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:24,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:24,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:24,062 INFO L87 Difference]: Start difference. First operand 22523 states and 25186 transitions. Second operand 7 states. [2020-10-29 07:48:26,401 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67