/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/Problem04_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:10:51,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:10:51,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:10:51,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:10:51,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:10:51,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:10:51,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:10:51,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:10:51,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:10:51,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:10:51,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:10:51,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:10:51,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:10:51,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:10:51,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:10:51,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:10:51,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:10:51,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:10:51,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:10:51,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:10:51,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:10:51,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:10:51,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:10:51,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:10:51,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:10:51,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:10:51,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:10:51,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:10:51,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:10:51,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:10:51,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:10:51,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:10:51,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:10:51,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:10:51,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:10:51,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:10:51,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:10:51,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:10:51,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:10:51,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:10:51,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:10:51,462 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 05:10:51,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:10:51,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:10:51,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:10:51,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:10:51,521 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:10:51,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:10:51,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:10:51,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:10:51,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:10:51,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:10:51,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:10:51,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:10:51,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:10:51,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:10:51,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:10:51,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:10:51,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:10:51,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:10:51,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:10:51,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:10:51,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:10:51,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:10:51,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:10:51,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:10:51,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:10:51,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:10:51,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:10:51,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:10:51,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:10:51,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:10:51,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:10:51,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:10:51,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:10:51,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:10:51,962 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:10:51,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label32.c [2020-10-29 05:10:52,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0b80a099/0355f5ce4e794b3d82b5351a1260cb69/FLAG684069716 [2020-10-29 05:10:53,168 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:10:53,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label32.c [2020-10-29 05:10:53,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0b80a099/0355f5ce4e794b3d82b5351a1260cb69/FLAG684069716 [2020-10-29 05:10:53,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0b80a099/0355f5ce4e794b3d82b5351a1260cb69 [2020-10-29 05:10:53,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:10:53,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:10:53,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:10:53,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:10:53,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:10:53,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:10:53" (1/1) ... [2020-10-29 05:10:53,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13136ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:53, skipping insertion in model container [2020-10-29 05:10:53,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:10:53" (1/1) ... [2020-10-29 05:10:53,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:10:53,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:10:55,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:10:55,336 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:10:56,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:10:56,193 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:10:56,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56 WrapperNode [2020-10-29 05:10:56,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:10:56,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:10:56,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:10:56,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:10:56,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (1/1) ... [2020-10-29 05:10:56,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (1/1) ... [2020-10-29 05:10:56,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (1/1) ... [2020-10-29 05:10:56,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (1/1) ... [2020-10-29 05:10:56,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (1/1) ... [2020-10-29 05:10:56,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (1/1) ... [2020-10-29 05:10:56,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (1/1) ... [2020-10-29 05:10:56,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:10:56,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:10:56,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:10:56,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:10:56,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (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 05:10:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:10:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:10:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:10:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:10:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:10:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:10:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:10:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:10:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:10:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:10:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:10:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:10:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:10:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:10:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:10:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:10:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:10:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:10:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:10:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:10:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:10:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:10:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:10:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:10:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:11:01,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:11:01,392 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:11:01,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:01 BoogieIcfgContainer [2020-10-29 05:11:01,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:11:01,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:11:01,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:11:01,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:11:01,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:10:53" (1/3) ... [2020-10-29 05:11:01,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f548f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:11:01, skipping insertion in model container [2020-10-29 05:11:01,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:56" (2/3) ... [2020-10-29 05:11:01,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f548f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:11:01, skipping insertion in model container [2020-10-29 05:11:01,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:01" (3/3) ... [2020-10-29 05:11:01,405 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label32.c [2020-10-29 05:11:01,418 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:11:01,426 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:11:01,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:11:01,480 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:11:01,481 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:11:01,481 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:11:01,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:11:01,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:11:01,481 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:11:01,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:11:01,482 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:11:01,521 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:11:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-29 05:11:01,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:01,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:01,619 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:01,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:01,627 INFO L82 PathProgramCache]: Analyzing trace with hash -765730800, now seen corresponding path program 1 times [2020-10-29 05:11:01,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:01,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887507219] [2020-10-29 05:11:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:07,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:07,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 801 [2020-10-29 05:11:07,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:11:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-29 05:11:07,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:07,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:11:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:11:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 792 [2020-10-29 05:11:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:11:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:08,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:08,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:08,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:08,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:11:08,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:08,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:11:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:09,541 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 05:11:09,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887507219] [2020-10-29 05:11:09,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:11:09,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:11:09,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191866003] [2020-10-29 05:11:09,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:11:09,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:09,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:11:09,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:11:09,568 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:11:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:20,161 INFO L93 Difference]: Finished difference Result 2677 states and 5140 transitions. [2020-10-29 05:11:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:11:20,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 785 [2020-10-29 05:11:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:20,227 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:11:20,228 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:11:20,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:11:20,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:11:20,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2020-10-29 05:11:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-29 05:11:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2781 transitions. [2020-10-29 05:11:20,467 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2781 transitions. Word has length 785 [2020-10-29 05:11:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:20,470 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2781 transitions. [2020-10-29 05:11:20,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:11:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2781 transitions. [2020-10-29 05:11:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-10-29 05:11:20,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:20,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:20,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:11:20,510 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:20,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1510796305, now seen corresponding path program 1 times [2020-10-29 05:11:20,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:20,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203290761] [2020-10-29 05:11:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:25,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:25,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 814 [2020-10-29 05:11:25,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:11:25,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 05:11:25,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:25,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:11:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:11:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 789 [2020-10-29 05:11:25,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:26,205 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:11:26,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:26,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:26,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:26,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:26,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:11:26,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:26,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:26,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:26,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:26,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:11:26,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:11:26,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:26,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:11:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:11:27,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203290761] [2020-10-29 05:11:27,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:27,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:11:27,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513889283] [2020-10-29 05:11:27,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:11:27,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:11:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:11:27,204 INFO L87 Difference]: Start difference. First operand 1699 states and 2781 transitions. Second operand 5 states. [2020-10-29 05:11:27,363 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:11:38,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:38,617 INFO L93 Difference]: Finished difference Result 5088 states and 8399 transitions. [2020-10-29 05:11:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:11:38,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 796 [2020-10-29 05:11:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:38,641 INFO L225 Difference]: With dead ends: 5088 [2020-10-29 05:11:38,641 INFO L226 Difference]: Without dead ends: 3395 [2020-10-29 05:11:38,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 05:11:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2020-10-29 05:11:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3389. [2020-10-29 05:11:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2020-10-29 05:11:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 4928 transitions. [2020-10-29 05:11:38,757 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 4928 transitions. Word has length 796 [2020-10-29 05:11:38,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:38,757 INFO L481 AbstractCegarLoop]: Abstraction has 3389 states and 4928 transitions. [2020-10-29 05:11:38,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:11:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 4928 transitions. [2020-10-29 05:11:38,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-29 05:11:38,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:38,774 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:38,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:11:38,775 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:38,776 INFO L82 PathProgramCache]: Analyzing trace with hash -254664814, now seen corresponding path program 1 times [2020-10-29 05:11:38,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:38,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157856150] [2020-10-29 05:11:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:43,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:43,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 867 [2020-10-29 05:11:43,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:11:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 05:11:43,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:43,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:11:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 05:11:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 05:11:43,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:44,197 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:11:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:44,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:11:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:44,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:44,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:44,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:44,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:44,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:11:44,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:11:44,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:44,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:11:44,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:11:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:44,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:44,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:44,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:11:44,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:11:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 05:11:44,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:44,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:11:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:11:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 05:11:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:44,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:44,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:11:44,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:44,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 05:11:44,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:44,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:11:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 05:11:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 05:11:45,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157856150] [2020-10-29 05:11:45,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:45,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:11:45,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902235744] [2020-10-29 05:11:45,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:11:45,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:45,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:11:45,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:11:45,079 INFO L87 Difference]: Start difference. First operand 3389 states and 4928 transitions. Second operand 7 states. [2020-10-29 05:11:45,214 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:11:48,313 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:11:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:58,583 INFO L93 Difference]: Finished difference Result 10268 states and 15136 transitions. [2020-10-29 05:11:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:11:58,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 845 [2020-10-29 05:11:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:58,625 INFO L225 Difference]: With dead ends: 10268 [2020-10-29 05:11:58,625 INFO L226 Difference]: Without dead ends: 6885 [2020-10-29 05:11:58,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:11:58,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6885 states. [2020-10-29 05:11:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6885 to 6854. [2020-10-29 05:11:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6854 states. [2020-10-29 05:11:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6854 states to 6854 states and 9147 transitions. [2020-10-29 05:11:58,859 INFO L78 Accepts]: Start accepts. Automaton has 6854 states and 9147 transitions. Word has length 845 [2020-10-29 05:11:58,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:58,859 INFO L481 AbstractCegarLoop]: Abstraction has 6854 states and 9147 transitions. [2020-10-29 05:11:58,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:11:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6854 states and 9147 transitions. [2020-10-29 05:11:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2020-10-29 05:11:58,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:58,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:58,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:11:58,885 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:58,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:58,886 INFO L82 PathProgramCache]: Analyzing trace with hash -251410080, now seen corresponding path program 1 times [2020-10-29 05:11:58,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:58,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499866042] [2020-10-29 05:11:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:03,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:03,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-29 05:12:03,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:12:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 05:12:03,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:03,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:12:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-29 05:12:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 789 [2020-10-29 05:12:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:04,490 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:12:04,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:04,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:04,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:04,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:12:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:04,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:04,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:04,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:12:04,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:12:04,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:04,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:04,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:12:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:04,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:04,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:12:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 05:12:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:04,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:12:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 05:12:05,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499866042] [2020-10-29 05:12:05,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:05,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:12:05,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474422274] [2020-10-29 05:12:05,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:12:05,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:05,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:12:05,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:12:05,445 INFO L87 Difference]: Start difference. First operand 6854 states and 9147 transitions. Second operand 6 states. [2020-10-29 05:12:05,585 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:12:05,819 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:12:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:22,274 INFO L93 Difference]: Finished difference Result 17107 states and 23522 transitions. [2020-10-29 05:12:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:12:22,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 875 [2020-10-29 05:12:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:22,322 INFO L225 Difference]: With dead ends: 17107 [2020-10-29 05:12:22,322 INFO L226 Difference]: Without dead ends: 10259 [2020-10-29 05:12:22,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:12:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10259 states. [2020-10-29 05:12:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10259 to 10255. [2020-10-29 05:12:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10255 states. [2020-10-29 05:12:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10255 states to 10255 states and 13334 transitions. [2020-10-29 05:12:22,624 INFO L78 Accepts]: Start accepts. Automaton has 10255 states and 13334 transitions. Word has length 875 [2020-10-29 05:12:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:22,624 INFO L481 AbstractCegarLoop]: Abstraction has 10255 states and 13334 transitions. [2020-10-29 05:12:22,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:12:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 10255 states and 13334 transitions. [2020-10-29 05:12:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2020-10-29 05:12:22,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:22,729 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:22,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:12:22,729 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:22,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:22,731 INFO L82 PathProgramCache]: Analyzing trace with hash -996119999, now seen corresponding path program 1 times [2020-10-29 05:12:22,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:22,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673411038] [2020-10-29 05:12:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 898 [2020-10-29 05:12:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:12:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-29 05:12:27,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:27,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:12:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 05:12:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-29 05:12:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:30,505 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-29 05:12:30,750 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-10-29 05:12:31,058 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-10-29 05:12:31,459 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 56 [2020-10-29 05:12:31,921 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 52 [2020-10-29 05:12:32,262 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-10-29 05:12:32,585 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 44 [2020-10-29 05:12:32,790 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2020-10-29 05:12:33,096 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-29 05:12:33,268 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-29 05:12:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:33,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:33,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:33,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:33,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:33,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:12:33,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:33,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:33,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:33,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:33,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:33,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:33,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:33,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:12:33,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:12:33,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:33,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:33,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:12:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:33,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:33,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 05:12:33,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:33,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 05:12:33,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:33,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 05:12:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 05:12:40,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673411038] [2020-10-29 05:12:40,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:40,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:12:40,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61549595] [2020-10-29 05:12:40,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:12:40,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:40,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:12:40,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:12:40,040 INFO L87 Difference]: Start difference. First operand 10255 states and 13334 transitions. Second operand 17 states. [2020-10-29 05:12:40,892 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 05:12:41,229 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:12:41,959 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2020-10-29 05:12:42,777 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 150 [2020-10-29 05:12:44,041 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2020-10-29 05:12:45,733 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2020-10-29 05:12:46,796 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 139 [2020-10-29 05:12:48,676 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 05:12:48,925 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:12:54,186 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:12:54,454 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:12:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:59,573 INFO L93 Difference]: Finished difference Result 21094 states and 27529 transitions. [2020-10-29 05:12:59,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:12:59,574 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 878 [2020-10-29 05:12:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:59,623 INFO L225 Difference]: With dead ends: 21094 [2020-10-29 05:12:59,623 INFO L226 Difference]: Without dead ends: 10845 [2020-10-29 05:12:59,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:12:59,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10845 states. [2020-10-29 05:12:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10845 to 10841. [2020-10-29 05:12:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10841 states. [2020-10-29 05:12:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10841 states to 10841 states and 13932 transitions. [2020-10-29 05:12:59,903 INFO L78 Accepts]: Start accepts. Automaton has 10841 states and 13932 transitions. Word has length 878 [2020-10-29 05:12:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:59,904 INFO L481 AbstractCegarLoop]: Abstraction has 10841 states and 13932 transitions. [2020-10-29 05:12:59,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:12:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 10841 states and 13932 transitions. [2020-10-29 05:12:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-29 05:12:59,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:59,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:59,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:12:59,946 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:59,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:59,947 INFO L82 PathProgramCache]: Analyzing trace with hash -448332487, now seen corresponding path program 1 times [2020-10-29 05:12:59,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:59,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695933054] [2020-10-29 05:12:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:13:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:00,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:00,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:05,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:05,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-29 05:13:05,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:13:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-29 05:13:05,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:05,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:13:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 05:13:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 05:13:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:05,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:05,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:05,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:13:05,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:13:05,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:05,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:05,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:05,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:13:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:05,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:13:05,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:13:05,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:05,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:13:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 05:13:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:05,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:05,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:13:05,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:13:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 05:13:05,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:05,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:13:05,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:05,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 05:13:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:05,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:05,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:05,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:13:05,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 05:13:05,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:05,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:13:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:13:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 05:13:05,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 302 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 05:13:06,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695933054] [2020-10-29 05:13:06,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:06,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:13:06,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087556246] [2020-10-29 05:13:06,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:13:06,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:06,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:13:06,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:13:06,214 INFO L87 Difference]: Start difference. First operand 10841 states and 13932 transitions. Second operand 8 states. [2020-10-29 05:13:06,606 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:13:22,603 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:13:27,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:13:27,848 INFO L93 Difference]: Finished difference Result 42116 states and 55726 transitions. [2020-10-29 05:13:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 05:13:27,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 972 [2020-10-29 05:13:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:13:27,956 INFO L225 Difference]: With dead ends: 42116 [2020-10-29 05:13:27,956 INFO L226 Difference]: Without dead ends: 29597 [2020-10-29 05:13:27,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:13:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29597 states. [2020-10-29 05:13:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29597 to 27875. [2020-10-29 05:13:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27875 states. [2020-10-29 05:13:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27875 states to 27875 states and 33946 transitions. [2020-10-29 05:13:28,731 INFO L78 Accepts]: Start accepts. Automaton has 27875 states and 33946 transitions. Word has length 972 [2020-10-29 05:13:28,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:13:28,732 INFO L481 AbstractCegarLoop]: Abstraction has 27875 states and 33946 transitions. [2020-10-29 05:13:28,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:13:28,732 INFO L276 IsEmpty]: Start isEmpty. Operand 27875 states and 33946 transitions. [2020-10-29 05:13:28,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-29 05:13:28,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:13:28,784 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:28,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:13:28,785 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:13:28,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:13:28,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1595522904, now seen corresponding path program 1 times [2020-10-29 05:13:28,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:13:28,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460987276] [2020-10-29 05:13:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:13:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:28,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:29,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:31,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:33,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:34,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1023 [2020-10-29 05:13:34,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:13:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5323 [2020-10-29 05:13:34,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:34,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:13:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-10-29 05:13:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 789 [2020-10-29 05:13:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:34,737 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:13:34,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:34,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:34,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:34,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:34,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:13:34,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:34,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:13:34,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:13:34,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:34,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:13:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:35,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:35,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 05:13:35,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 05:13:35,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:35,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 05:13:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 05:13:35,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460987276] [2020-10-29 05:13:35,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:35,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:13:35,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282923383] [2020-10-29 05:13:35,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:13:35,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:35,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:13:35,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:13:35,797 INFO L87 Difference]: Start difference. First operand 27875 states and 33946 transitions. Second operand 5 states. [2020-10-29 05:13:35,942 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:13:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:13:47,173 INFO L93 Difference]: Finished difference Result 55748 states and 67897 transitions. [2020-10-29 05:13:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:13:47,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1003 [2020-10-29 05:13:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:13:47,266 INFO L225 Difference]: With dead ends: 55748 [2020-10-29 05:13:47,267 INFO L226 Difference]: Without dead ends: 27879 [2020-10-29 05:13:47,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 05:13:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27879 states. [2020-10-29 05:13:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27879 to 27875. [2020-10-29 05:13:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27875 states. [2020-10-29 05:13:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27875 states to 27875 states and 33302 transitions. [2020-10-29 05:13:47,848 INFO L78 Accepts]: Start accepts. Automaton has 27875 states and 33302 transitions. Word has length 1003 [2020-10-29 05:13:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:13:47,850 INFO L481 AbstractCegarLoop]: Abstraction has 27875 states and 33302 transitions. [2020-10-29 05:13:47,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:13:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 27875 states and 33302 transitions. [2020-10-29 05:13:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2020-10-29 05:13:47,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:13:47,908 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:47,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:13:47,908 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:13:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:13:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2142979544, now seen corresponding path program 1 times [2020-10-29 05:13:47,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:13:47,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895788023] [2020-10-29 05:13:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:13:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:49,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1189 [2020-10-29 05:13:53,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:13:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-29 05:13:53,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:13:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 254 [2020-10-29 05:13:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 05:13:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:53,539 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:13:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:13:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:13:53,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:13:53,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:53,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:13:53,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:53,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:13:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 05:13:53,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:53,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:13:53,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:53,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 05:13:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:13:53,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:53,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:13:53,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:53,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:53,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:53,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:13:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 05:13:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:13:53,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:13:53,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:53,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:53,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-29 05:13:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:13:53,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 05:13:53,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:13:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 05:13:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:13:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 05:13:54,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:54,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:13:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:13:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:13:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 599 proven. 2 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-10-29 05:13:54,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895788023] [2020-10-29 05:13:54,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:54,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:13:54,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52057296] [2020-10-29 05:13:54,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:13:54,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:54,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:13:54,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:13:54,844 INFO L87 Difference]: Start difference. First operand 27875 states and 33302 transitions. Second operand 7 states. [2020-10-29 05:13:55,513 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:14:08,394 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:14:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:14:10,035 INFO L93 Difference]: Finished difference Result 69378 states and 83937 transitions. [2020-10-29 05:14:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:14:10,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1161 [2020-10-29 05:14:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:14:10,160 INFO L225 Difference]: With dead ends: 69378 [2020-10-29 05:14:10,160 INFO L226 Difference]: Without dead ends: 41509 [2020-10-29 05:14:10,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:14:10,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41509 states. [2020-10-29 05:14:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41509 to 39799. [2020-10-29 05:14:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39799 states. [2020-10-29 05:14:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39799 states to 39799 states and 46934 transitions. [2020-10-29 05:14:11,154 INFO L78 Accepts]: Start accepts. Automaton has 39799 states and 46934 transitions. Word has length 1161 [2020-10-29 05:14:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:14:11,155 INFO L481 AbstractCegarLoop]: Abstraction has 39799 states and 46934 transitions. [2020-10-29 05:14:11,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:14:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 39799 states and 46934 transitions. [2020-10-29 05:14:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1226 [2020-10-29 05:14:11,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:14:11,214 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:11,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:14:11,215 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:14:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:14:11,215 INFO L82 PathProgramCache]: Analyzing trace with hash 991231322, now seen corresponding path program 1 times [2020-10-29 05:14:11,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:14:11,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537997420] [2020-10-29 05:14:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:14:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:16,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:16,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1251 [2020-10-29 05:14:16,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:14:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 05:14:16,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:16,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:14:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-29 05:14:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 05:14:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:16,767 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:14:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:14:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:16,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:16,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:14:16,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:14:16,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:16,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:14:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:16,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:14:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:14:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:16,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:16,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:14:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 05:14:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:14:16,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:16,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 05:14:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:16,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:16,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:16,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:14:16,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:14:16,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:16,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:14:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:14:16,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 05:14:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:17,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:17,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:17,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 05:14:17,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 05:14:17,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:17,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:14:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:14:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 05:14:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-10-29 05:14:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:17,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:17,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:17,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:14:17,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 05:14:17,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:17,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-29 05:14:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 562 proven. 139 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-29 05:14:18,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537997420] [2020-10-29 05:14:18,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:14:18,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:14:18,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702402704] [2020-10-29 05:14:18,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:14:18,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:14:18,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:14:18,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:14:18,556 INFO L87 Difference]: Start difference. First operand 39799 states and 46934 transitions. Second operand 7 states. [2020-10-29 05:14:18,859 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:14:21,769 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 99