/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:14:58,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:14:58,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:14:58,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:14:58,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:14:58,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:14:58,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:14:58,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:14:58,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:14:58,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:14:58,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:14:58,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:14:58,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:14:58,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:14:58,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:14:58,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:14:58,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:14:58,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:14:58,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:14:58,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:14:58,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:14:58,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:14:58,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:14:58,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:14:58,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:14:58,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:14:58,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:14:58,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:14:58,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:14:58,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:14:58,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:14:58,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:14:58,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:14:58,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:14:58,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:14:58,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:14:58,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:14:58,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:14:58,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:14:58,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:14:58,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:14:58,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:14:58,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:14:58,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:14:58,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:14:58,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:14:58,611 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:14:58,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:14:58,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:14:58,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:14:58,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:14:58,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:14:58,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:14:58,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:14:58,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:14:58,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:14:58,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:14:58,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:14:58,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:14:58,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:14:58,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:14:58,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:14:58,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:14:58,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:14:58,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:14:58,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:14:58,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:14:58,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:14:58,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:14:58,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:14:58,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:14:58,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:14:59,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:14:59,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:14:59,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:14:59,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:14:59,109 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:14:59,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2020-10-28 13:14:59,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/184ee8b45/4a8e77b640ad4b2aa6d62d70fc8d197f/FLAG0703819de [2020-10-28 13:15:00,122 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:15:00,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2020-10-28 13:15:00,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/184ee8b45/4a8e77b640ad4b2aa6d62d70fc8d197f/FLAG0703819de [2020-10-28 13:15:00,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/184ee8b45/4a8e77b640ad4b2aa6d62d70fc8d197f [2020-10-28 13:15:00,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:15:00,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:15:00,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:15:00,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:15:00,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:15:00,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0f4754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00, skipping insertion in model container [2020-10-28 13:15:00,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:15:00,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:15:01,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:15:01,239 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:15:01,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:15:01,481 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:15:01,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01 WrapperNode [2020-10-28 13:15:01,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:15:01,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:15:01,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:15:01,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:15:01,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (1/1) ... [2020-10-28 13:15:01,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (1/1) ... [2020-10-28 13:15:01,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (1/1) ... [2020-10-28 13:15:01,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (1/1) ... [2020-10-28 13:15:01,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (1/1) ... [2020-10-28 13:15:01,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (1/1) ... [2020-10-28 13:15:01,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (1/1) ... [2020-10-28 13:15:01,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:15:01,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:15:01,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:15:01,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:15:01,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:15:01,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:15:01,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:15:01,821 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:15:01,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:15:01,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:15:01,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:15:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:15:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:15:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:15:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:15:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:15:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:15:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:15:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:15:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:15:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:15:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:15:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:15:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:15:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:15:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:15:05,108 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:15:05,108 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:15:05,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:15:05 BoogieIcfgContainer [2020-10-28 13:15:05,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:15:05,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:15:05,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:15:05,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:15:05,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:15:00" (1/3) ... [2020-10-28 13:15:05,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729a6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:15:05, skipping insertion in model container [2020-10-28 13:15:05,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:01" (2/3) ... [2020-10-28 13:15:05,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729a6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:15:05, skipping insertion in model container [2020-10-28 13:15:05,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:15:05" (3/3) ... [2020-10-28 13:15:05,122 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label03.c [2020-10-28 13:15:05,135 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:15:05,141 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:15:05,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:15:05,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:15:05,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:15:05,189 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:15:05,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:15:05,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:15:05,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:15:05,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:15:05,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:15:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:15:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 13:15:05,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:05,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:05,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash -104759924, now seen corresponding path program 1 times [2020-10-28 13:15:05,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:05,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970186119] [2020-10-28 13:15:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:05,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:05,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 13:15:05,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-28 13:15:05,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:05,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:05,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 13:15:05,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:15:06,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:06,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:06,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:06,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:15:06,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:06,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:06,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:06,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:06,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970186119] [2020-10-28 13:15:06,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:15:06,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:15:06,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246347035] [2020-10-28 13:15:06,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:15:06,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:06,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:15:06,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:15:06,208 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:15:11,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:11,238 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-28 13:15:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:15:11,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-28 13:15:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:11,282 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:15:11,283 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:15:11,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:15:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:15:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-28 13:15:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-28 13:15:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-28 13:15:11,475 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 13 [2020-10-28 13:15:11,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:11,475 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-28 13:15:11,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:15:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-28 13:15:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 13:15:11,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:11,480 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:15:11,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:15:11,481 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:11,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:11,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1104471301, now seen corresponding path program 1 times [2020-10-28 13:15:11,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:11,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013841312] [2020-10-28 13:15:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:11,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:12,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:15:12,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:15:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-28 13:15:12,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:12,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:15:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:15:12,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:12,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:12,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:12,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:12,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:15:12,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:12,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:12,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:12,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:12,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:12,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:13,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:13,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:15:13,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:13,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 13:15:13,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:13,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:15:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:13,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013841312] [2020-10-28 13:15:13,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:15:13,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:15:13,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012368124] [2020-10-28 13:15:13,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:13,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:13,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:13,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:13,135 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 7 states. [2020-10-28 13:15:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:19,025 INFO L93 Difference]: Finished difference Result 1765 states and 2732 transitions. [2020-10-28 13:15:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:15:19,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-28 13:15:19,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:19,044 INFO L225 Difference]: With dead ends: 1765 [2020-10-28 13:15:19,044 INFO L226 Difference]: Without dead ends: 1081 [2020-10-28 13:15:19,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-10-28 13:15:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1042. [2020-10-28 13:15:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-28 13:15:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1495 transitions. [2020-10-28 13:15:19,154 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1495 transitions. Word has length 88 [2020-10-28 13:15:19,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:19,155 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1495 transitions. [2020-10-28 13:15:19,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1495 transitions. [2020-10-28 13:15:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 13:15:19,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:19,159 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:15:19,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:15:19,159 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:19,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:19,160 INFO L82 PathProgramCache]: Analyzing trace with hash -677009235, now seen corresponding path program 1 times [2020-10-28 13:15:19,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:19,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192756750] [2020-10-28 13:15:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:19,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:20,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:20,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:15:20,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:15:20,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-10-28 13:15:20,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:20,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:15:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:20,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:20,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:20,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:15:20,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:20,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:20,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:20,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:20,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:20,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:15:20,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 13:15:20,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:20,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:15:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:20,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192756750] [2020-10-28 13:15:20,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:15:20,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:15:20,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97284437] [2020-10-28 13:15:20,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:20,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:20,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:20,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:20,667 INFO L87 Difference]: Start difference. First operand 1042 states and 1495 transitions. Second operand 7 states. [2020-10-28 13:15:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:29,125 INFO L93 Difference]: Finished difference Result 3170 states and 4639 transitions. [2020-10-28 13:15:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:15:29,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-28 13:15:29,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:29,140 INFO L225 Difference]: With dead ends: 3170 [2020-10-28 13:15:29,140 INFO L226 Difference]: Without dead ends: 2134 [2020-10-28 13:15:29,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:15:29,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2020-10-28 13:15:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2092. [2020-10-28 13:15:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2092 states. [2020-10-28 13:15:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 2713 transitions. [2020-10-28 13:15:29,230 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 2713 transitions. Word has length 89 [2020-10-28 13:15:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:29,231 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 2713 transitions. [2020-10-28 13:15:29,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 2713 transitions. [2020-10-28 13:15:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 13:15:29,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:29,237 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:29,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:15:29,238 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:29,239 INFO L82 PathProgramCache]: Analyzing trace with hash 446743102, now seen corresponding path program 1 times [2020-10-28 13:15:29,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:29,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314677007] [2020-10-28 13:15:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:29,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:32,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:32,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 13:15:32,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:15:32,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3507 [2020-10-28 13:15:32,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:32,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:15:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:15:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:32,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:32,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:32,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:15:32,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:32,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:33,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:15:33,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:15:33,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:33,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:15:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:15:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:33,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:33,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:15:33,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:15:33,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:33,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:15:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:15:33,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314677007] [2020-10-28 13:15:33,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:33,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:33,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947246522] [2020-10-28 13:15:33,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:33,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:33,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:33,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:33,410 INFO L87 Difference]: Start difference. First operand 2092 states and 2713 transitions. Second operand 7 states. [2020-10-28 13:15:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:40,096 INFO L93 Difference]: Finished difference Result 4919 states and 6619 transitions. [2020-10-28 13:15:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:15:40,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-28 13:15:40,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:40,117 INFO L225 Difference]: With dead ends: 4919 [2020-10-28 13:15:40,118 INFO L226 Difference]: Without dead ends: 2833 [2020-10-28 13:15:40,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-10-28 13:15:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2438. [2020-10-28 13:15:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2438 states. [2020-10-28 13:15:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3191 transitions. [2020-10-28 13:15:40,213 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3191 transitions. Word has length 176 [2020-10-28 13:15:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:40,214 INFO L481 AbstractCegarLoop]: Abstraction has 2438 states and 3191 transitions. [2020-10-28 13:15:40,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3191 transitions. [2020-10-28 13:15:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-28 13:15:40,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:40,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:40,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:15:40,225 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:40,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1799628771, now seen corresponding path program 1 times [2020-10-28 13:15:40,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:40,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954074850] [2020-10-28 13:15:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:41,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:44,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:44,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-28 13:15:44,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:15:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4361 [2020-10-28 13:15:44,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:44,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:15:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:15:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:44,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:44,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:44,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:44,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:15:44,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:44,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:44,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:44,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:44,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:15:44,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:15:44,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:44,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:15:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:15:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:45,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:45,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:15:45,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:15:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-28 13:15:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:45,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:15:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-28 13:15:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:45,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:45,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:15:45,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 13:15:45,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:45,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:15:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 191 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-28 13:15:45,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954074850] [2020-10-28 13:15:45,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:45,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:45,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909475274] [2020-10-28 13:15:45,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:45,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:45,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:45,865 INFO L87 Difference]: Start difference. First operand 2438 states and 3191 transitions. Second operand 7 states. [2020-10-28 13:15:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:52,748 INFO L93 Difference]: Finished difference Result 6299 states and 8436 transitions. [2020-10-28 13:15:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:15:52,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-28 13:15:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:52,772 INFO L225 Difference]: With dead ends: 6299 [2020-10-28 13:15:52,772 INFO L226 Difference]: Without dead ends: 3496 [2020-10-28 13:15:52,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2020-10-28 13:15:52,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3473. [2020-10-28 13:15:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3473 states. [2020-10-28 13:15:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 3809 transitions. [2020-10-28 13:15:52,894 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 3809 transitions. Word has length 354 [2020-10-28 13:15:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:52,895 INFO L481 AbstractCegarLoop]: Abstraction has 3473 states and 3809 transitions. [2020-10-28 13:15:52,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 3809 transitions. [2020-10-28 13:15:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 13:15:52,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:52,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:52,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:15:52,903 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:52,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1636988961, now seen corresponding path program 1 times [2020-10-28 13:15:52,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:52,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023474464] [2020-10-28 13:15:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:54,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:57,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:57,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-28 13:15:57,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:15:57,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:15:57,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:57,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:15:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:15:57,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:58,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:58,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:58,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:15:58,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:58,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:58,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:58,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:15:58,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:15:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:58,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:15:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:15:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:58,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:58,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:58,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:15:58,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 13:15:58,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:58,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:15:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 13:15:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:58,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:15:58,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:15:58,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:58,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:58,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:15:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:15:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 116 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 13:15:58,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023474464] [2020-10-28 13:15:58,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:58,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:58,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057340959] [2020-10-28 13:15:59,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:59,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:59,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:59,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:59,002 INFO L87 Difference]: Start difference. First operand 3473 states and 3809 transitions. Second operand 7 states. [2020-10-28 13:16:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:03,721 INFO L93 Difference]: Finished difference Result 9015 states and 10023 transitions. [2020-10-28 13:16:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:16:03,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-28 13:16:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:03,746 INFO L225 Difference]: With dead ends: 9015 [2020-10-28 13:16:03,746 INFO L226 Difference]: Without dead ends: 5206 [2020-10-28 13:16:03,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:16:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2020-10-28 13:16:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 4843. [2020-10-28 13:16:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4843 states. [2020-10-28 13:16:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 5265 transitions. [2020-10-28 13:16:03,876 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 5265 transitions. Word has length 357 [2020-10-28 13:16:03,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:03,877 INFO L481 AbstractCegarLoop]: Abstraction has 4843 states and 5265 transitions. [2020-10-28 13:16:03,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:03,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 5265 transitions. [2020-10-28 13:16:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-28 13:16:03,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:03,890 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:16:03,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:16:03,891 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:03,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1846699539, now seen corresponding path program 1 times [2020-10-28 13:16:03,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:03,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631927823] [2020-10-28 13:16:03,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:04,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-28 13:16:09,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:16:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 13:16:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:09,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:16:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:16:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:09,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:09,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:09,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:09,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:16:09,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:09,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:16:09,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:09,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:09,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:09,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:16:09,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-28 13:16:09,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:09,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:16:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-28 13:16:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:10,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:10,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:16:10,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:16:10,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:10,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:16:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:10,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-28 13:16:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:10,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:10,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:16:10,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:16:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:10,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:16:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 15 proven. 203 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 13:16:10,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631927823] [2020-10-28 13:16:10,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:10,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:10,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785648871] [2020-10-28 13:16:10,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:10,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:10,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:10,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:10,384 INFO L87 Difference]: Start difference. First operand 4843 states and 5265 transitions. Second operand 7 states. [2020-10-28 13:16:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:14,652 INFO L93 Difference]: Finished difference Result 10405 states and 11315 transitions. [2020-10-28 13:16:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:16:14,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2020-10-28 13:16:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:14,687 INFO L225 Difference]: With dead ends: 10405 [2020-10-28 13:16:14,688 INFO L226 Difference]: Without dead ends: 5568 [2020-10-28 13:16:14,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:16:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2020-10-28 13:16:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5524. [2020-10-28 13:16:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5524 states. [2020-10-28 13:16:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 5977 transitions. [2020-10-28 13:16:14,850 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 5977 transitions. Word has length 475 [2020-10-28 13:16:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:14,851 INFO L481 AbstractCegarLoop]: Abstraction has 5524 states and 5977 transitions. [2020-10-28 13:16:14,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 5977 transitions. [2020-10-28 13:16:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-28 13:16:14,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:14,861 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:14,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:16:14,861 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:14,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1148541443, now seen corresponding path program 1 times [2020-10-28 13:16:14,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:14,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784562403] [2020-10-28 13:16:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:18,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:18,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 575 [2020-10-28 13:16:18,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:16:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3587 [2020-10-28 13:16:18,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:18,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:16:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:16:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:18,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:16:18,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:18,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:18,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:18,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:16:18,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:16:18,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:18,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:16:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:19,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:16:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:19,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:16:19,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:19,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:19,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:16:19,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-28 13:16:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:16:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:16:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:19,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:16:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 179 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 13:16:19,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784562403] [2020-10-28 13:16:19,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:19,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:19,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485228265] [2020-10-28 13:16:19,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:19,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:19,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:19,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:19,724 INFO L87 Difference]: Start difference. First operand 5524 states and 5977 transitions. Second operand 7 states. [2020-10-28 13:16:24,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:24,547 INFO L93 Difference]: Finished difference Result 12769 states and 14026 transitions. [2020-10-28 13:16:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:16:24,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-28 13:16:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:24,585 INFO L225 Difference]: With dead ends: 12769 [2020-10-28 13:16:24,585 INFO L226 Difference]: Without dead ends: 7588 [2020-10-28 13:16:24,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:16:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2020-10-28 13:16:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 6896. [2020-10-28 13:16:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6896 states. [2020-10-28 13:16:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 7422 transitions. [2020-10-28 13:16:24,771 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 7422 transitions. Word has length 559 [2020-10-28 13:16:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:24,772 INFO L481 AbstractCegarLoop]: Abstraction has 6896 states and 7422 transitions. [2020-10-28 13:16:24,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 7422 transitions. [2020-10-28 13:16:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2020-10-28 13:16:24,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:24,785 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:24,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:16:24,785 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:24,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1567668478, now seen corresponding path program 1 times [2020-10-28 13:16:24,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:24,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072118162] [2020-10-28 13:16:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:25,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:29,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:29,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 740 [2020-10-28 13:16:29,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:16:29,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:16:29,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:29,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:16:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:16:29,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:30,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:30,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:30,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:30,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:16:30,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:30,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:30,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:30,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:30,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:30,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:30,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:30,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:30,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:30,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:16:30,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:16:30,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:30,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:16:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:16:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:30,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:30,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:16:30,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-28 13:16:30,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:30,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:16:30,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:16:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:31,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:31,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:16:31,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:31,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:16:31,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:31,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:31,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:31,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:16:31,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:31,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:16:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:31,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:31,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:16:31,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:16:31,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:31,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:16:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:31,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 272 proven. 209 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-28 13:16:31,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072118162] [2020-10-28 13:16:31,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:31,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:31,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016028718] [2020-10-28 13:16:31,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:31,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:31,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:31,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:31,764 INFO L87 Difference]: Start difference. First operand 6896 states and 7422 transitions. Second operand 7 states. [2020-10-28 13:16:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:36,516 INFO L93 Difference]: Finished difference Result 13477 states and 14548 transitions. [2020-10-28 13:16:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:16:36,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 722 [2020-10-28 13:16:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:36,543 INFO L225 Difference]: With dead ends: 13477 [2020-10-28 13:16:36,544 INFO L226 Difference]: Without dead ends: 6926 [2020-10-28 13:16:36,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:16:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2020-10-28 13:16:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6898. [2020-10-28 13:16:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6898 states. [2020-10-28 13:16:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6898 states to 6898 states and 7418 transitions. [2020-10-28 13:16:36,732 INFO L78 Accepts]: Start accepts. Automaton has 6898 states and 7418 transitions. Word has length 722 [2020-10-28 13:16:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:36,733 INFO L481 AbstractCegarLoop]: Abstraction has 6898 states and 7418 transitions. [2020-10-28 13:16:36,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6898 states and 7418 transitions. [2020-10-28 13:16:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2020-10-28 13:16:36,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:36,747 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:36,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:16:36,748 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:36,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:36,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1694769707, now seen corresponding path program 1 times [2020-10-28 13:16:36,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:36,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114052097] [2020-10-28 13:16:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:42,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:42,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 776 [2020-10-28 13:16:42,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 13:16:42,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:42,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:16:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:16:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:42,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:42,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:42,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:42,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:42,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:42,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:16:42,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:42,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:42,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:42,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:42,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:42,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:16:42,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:16:42,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:42,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:16:42,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:42,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:16:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:42,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:42,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:42,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:16:42,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 13:16:42,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:42,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:16:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:16:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:43,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:43,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:43,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:43,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:16:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:43,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:43,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:16:43,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:16:43,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:43,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:16:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:43,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-28 13:16:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:43,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:43,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:16:43,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:16:43,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:43,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:16:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 196 proven. 335 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2020-10-28 13:16:44,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114052097] [2020-10-28 13:16:44,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:44,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:16:44,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900264871] [2020-10-28 13:16:44,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:16:44,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:44,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:16:44,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:16:44,007 INFO L87 Difference]: Start difference. First operand 6898 states and 7418 transitions. Second operand 8 states. [2020-10-28 13:16:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:50,938 INFO L93 Difference]: Finished difference Result 16540 states and 18118 transitions. [2020-10-28 13:16:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:16:50,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 756 [2020-10-28 13:16:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:50,973 INFO L225 Difference]: With dead ends: 16540 [2020-10-28 13:16:50,974 INFO L226 Difference]: Without dead ends: 9645 [2020-10-28 13:16:50,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:16:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states. [2020-10-28 13:16:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9645 to 9300. [2020-10-28 13:16:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9300 states. [2020-10-28 13:16:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9300 states to 9300 states and 10042 transitions. [2020-10-28 13:16:51,221 INFO L78 Accepts]: Start accepts. Automaton has 9300 states and 10042 transitions. Word has length 756 [2020-10-28 13:16:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:51,222 INFO L481 AbstractCegarLoop]: Abstraction has 9300 states and 10042 transitions. [2020-10-28 13:16:51,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:16:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9300 states and 10042 transitions. [2020-10-28 13:16:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-28 13:16:51,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:51,239 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:51,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:16:51,240 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:51,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:51,241 INFO L82 PathProgramCache]: Analyzing trace with hash -997772131, now seen corresponding path program 1 times [2020-10-28 13:16:51,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:51,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090421816] [2020-10-28 13:16:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:52,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:56,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:56,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-28 13:16:56,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 13:16:56,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:56,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 676 [2020-10-28 13:16:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:16:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:56,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:56,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:16:56,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:16:56,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:56,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:16:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:57,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:57,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:16:57,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:16:57,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:57,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:57,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:16:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:16:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:57,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:16:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:57,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:16:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:57,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:57,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:57,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:16:57,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:57,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:16:57,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:57,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:16:57,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 514 proven. 2 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-28 13:16:57,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090421816] [2020-10-28 13:16:57,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:57,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:57,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18129597] [2020-10-28 13:16:57,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:57,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:57,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:57,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:57,866 INFO L87 Difference]: Start difference. First operand 9300 states and 10042 transitions. Second operand 7 states. [2020-10-28 13:17:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:03,121 INFO L93 Difference]: Finished difference Result 22674 states and 24807 transitions. [2020-10-28 13:17:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:17:03,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 817 [2020-10-28 13:17:03,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:03,183 INFO L225 Difference]: With dead ends: 22674 [2020-10-28 13:17:03,183 INFO L226 Difference]: Without dead ends: 13719 [2020-10-28 13:17:03,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:17:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13719 states. [2020-10-28 13:17:03,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13719 to 13372. [2020-10-28 13:17:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13372 states. [2020-10-28 13:17:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13372 states to 13372 states and 14467 transitions. [2020-10-28 13:17:03,568 INFO L78 Accepts]: Start accepts. Automaton has 13372 states and 14467 transitions. Word has length 817 [2020-10-28 13:17:03,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:03,570 INFO L481 AbstractCegarLoop]: Abstraction has 13372 states and 14467 transitions. [2020-10-28 13:17:03,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 13372 states and 14467 transitions. [2020-10-28 13:17:03,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-28 13:17:03,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:03,586 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:03,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:17:03,586 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:03,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2079981009, now seen corresponding path program 1 times [2020-10-28 13:17:03,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:03,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712104967] [2020-10-28 13:17:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:08,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-28 13:17:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:17:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-28 13:17:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:08,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 677 [2020-10-28 13:17:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:17:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:09,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:09,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:09,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:09,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:17:09,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:09,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:09,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:09,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:09,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:17:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:17:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:09,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:17:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:09,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:09,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:09,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:17:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:17:09,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:17:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:09,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:09,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:17:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:09,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:09,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:09,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:17:09,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:17:09,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:09,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:17:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:09,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:17:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:09,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:17:09,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 515 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2020-10-28 13:17:10,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712104967] [2020-10-28 13:17:10,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:10,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:10,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035438948] [2020-10-28 13:17:10,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:10,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:10,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:10,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:10,150 INFO L87 Difference]: Start difference. First operand 13372 states and 14467 transitions. Second operand 7 states. [2020-10-28 13:17:15,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:15,039 INFO L93 Difference]: Finished difference Result 29109 states and 31637 transitions. [2020-10-28 13:17:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:17:15,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 818 [2020-10-28 13:17:15,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:15,096 INFO L225 Difference]: With dead ends: 29109 [2020-10-28 13:17:15,096 INFO L226 Difference]: Without dead ends: 15741 [2020-10-28 13:17:15,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:17:15,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15741 states. [2020-10-28 13:17:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15741 to 15059. [2020-10-28 13:17:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15059 states. [2020-10-28 13:17:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15059 states to 15059 states and 16122 transitions. [2020-10-28 13:17:15,398 INFO L78 Accepts]: Start accepts. Automaton has 15059 states and 16122 transitions. Word has length 818 [2020-10-28 13:17:15,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:15,399 INFO L481 AbstractCegarLoop]: Abstraction has 15059 states and 16122 transitions. [2020-10-28 13:17:15,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 15059 states and 16122 transitions. [2020-10-28 13:17:15,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2020-10-28 13:17:15,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:15,419 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-28 13:17:15,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:17:15,419 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:15,420 INFO L82 PathProgramCache]: Analyzing trace with hash 699064435, now seen corresponding path program 1 times [2020-10-28 13:17:15,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:15,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814053241] [2020-10-28 13:17:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:20,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:20,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 896 [2020-10-28 13:17:20,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:17:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4697 [2020-10-28 13:17:20,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:20,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:17:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-28 13:17:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:20,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:20,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:20,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:20,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:17:20,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:20,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:20,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:20,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:20,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:17:20,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:17:20,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:20,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:17:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:20,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:20,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:17:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:17:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:20,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:17:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:20,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:17:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:21,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:21,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:17:21,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-28 13:17:21,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:21,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:17:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:17:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:21,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:21,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:21,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 13:17:21,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:21,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:17:21,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:21,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-28 13:17:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:21,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-28 13:17:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:21,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:21,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:17:21,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 13:17:21,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:21,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 359 proven. 293 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2020-10-28 13:17:22,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814053241] [2020-10-28 13:17:22,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:22,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:22,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432859154] [2020-10-28 13:17:22,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:22,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:22,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:22,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:22,287 INFO L87 Difference]: Start difference. First operand 15059 states and 16122 transitions. Second operand 7 states. [2020-10-28 13:17:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:26,767 INFO L93 Difference]: Finished difference Result 32483 states and 34736 transitions. [2020-10-28 13:17:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:17:26,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 876 [2020-10-28 13:17:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:26,817 INFO L225 Difference]: With dead ends: 32483 [2020-10-28 13:17:26,817 INFO L226 Difference]: Without dead ends: 17769 [2020-10-28 13:17:26,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:17:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17769 states. [2020-10-28 13:17:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17769 to 16752. [2020-10-28 13:17:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16752 states. [2020-10-28 13:17:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16752 states to 16752 states and 17905 transitions. [2020-10-28 13:17:27,192 INFO L78 Accepts]: Start accepts. Automaton has 16752 states and 17905 transitions. Word has length 876 [2020-10-28 13:17:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:27,192 INFO L481 AbstractCegarLoop]: Abstraction has 16752 states and 17905 transitions. [2020-10-28 13:17:27,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 16752 states and 17905 transitions. [2020-10-28 13:17:27,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2020-10-28 13:17:27,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:27,216 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:27,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:17:27,216 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:27,217 INFO L82 PathProgramCache]: Analyzing trace with hash 649155261, now seen corresponding path program 1 times [2020-10-28 13:17:27,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:27,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272612544] [2020-10-28 13:17:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:29,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:29,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 953 [2020-10-28 13:17:29,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1896 [2020-10-28 13:17:29,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:29,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 938 [2020-10-28 13:17:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 13:17:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:29,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:29,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:29,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:17:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:29,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:29,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:29,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:29,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:29,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:17:29,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:29,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:17:29,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:29,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:17:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:17:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:17:29,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:17:29,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:29,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:17:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:17:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:30,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:30,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:17:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:17:30,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:30,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-28 13:17:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:30,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:30,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 13:17:30,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:30,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:17:30,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:30,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:30,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:17:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:30,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:30,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:17:30,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-28 13:17:30,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:30,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:17:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2020-10-28 13:17:31,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272612544] [2020-10-28 13:17:31,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:31,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:17:31,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539741461] [2020-10-28 13:17:31,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:17:31,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:31,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:17:31,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:17:31,506 INFO L87 Difference]: Start difference. First operand 16752 states and 17905 transitions. Second operand 5 states. [2020-10-28 13:17:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:35,397 INFO L93 Difference]: Finished difference Result 33159 states and 35462 transitions. [2020-10-28 13:17:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:17:35,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 933 [2020-10-28 13:17:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:35,446 INFO L225 Difference]: With dead ends: 33159 [2020-10-28 13:17:35,446 INFO L226 Difference]: Without dead ends: 16752 [2020-10-28 13:17:35,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:17:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16752 states. [2020-10-28 13:17:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16752 to 16415. [2020-10-28 13:17:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16415 states. [2020-10-28 13:17:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16415 states to 16415 states and 17320 transitions. [2020-10-28 13:17:35,787 INFO L78 Accepts]: Start accepts. Automaton has 16415 states and 17320 transitions. Word has length 933 [2020-10-28 13:17:35,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:35,788 INFO L481 AbstractCegarLoop]: Abstraction has 16415 states and 17320 transitions. [2020-10-28 13:17:35,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:17:35,788 INFO L276 IsEmpty]: Start isEmpty. Operand 16415 states and 17320 transitions. [2020-10-28 13:17:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2020-10-28 13:17:35,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:35,829 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2020-10-28 13:17:35,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:17:35,830 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:35,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1209632010, now seen corresponding path program 1 times [2020-10-28 13:17:35,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:35,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148952055] [2020-10-28 13:17:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:41,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:41,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1264 [2020-10-28 13:17:41,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:17:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 13:17:41,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:41,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:17:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:17:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:41,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:41,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:17:41,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:17:41,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:41,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:17:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:17:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:17:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:41,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:17:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:41,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:41,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:17:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:42,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:42,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:17:42,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:42,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 13:17:42,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:42,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:42,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:42,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:42,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:17:42,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:17:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:42,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:42,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:17:42,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:42,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-28 13:17:42,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:42,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:42,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:42,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:42,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:17:42,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:17:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:42,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:42,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 13:17:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:17:42,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 835 proven. 169 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2020-10-28 13:17:43,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148952055] [2020-10-28 13:17:43,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:43,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:43,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574518066] [2020-10-28 13:17:43,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:43,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:43,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:43,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:43,949 INFO L87 Difference]: Start difference. First operand 16415 states and 17320 transitions. Second operand 7 states. [2020-10-28 13:17:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:48,854 INFO L93 Difference]: Finished difference Result 32489 states and 34299 transitions. [2020-10-28 13:17:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:17:48,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1242 [2020-10-28 13:17:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:48,903 INFO L225 Difference]: With dead ends: 32489 [2020-10-28 13:17:48,903 INFO L226 Difference]: Without dead ends: 16419 [2020-10-28 13:17:48,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:17:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16419 states. [2020-10-28 13:17:49,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16419 to 16415. [2020-10-28 13:17:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16415 states. [2020-10-28 13:17:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16415 states to 16415 states and 17312 transitions. [2020-10-28 13:17:49,224 INFO L78 Accepts]: Start accepts. Automaton has 16415 states and 17312 transitions. Word has length 1242 [2020-10-28 13:17:49,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:49,225 INFO L481 AbstractCegarLoop]: Abstraction has 16415 states and 17312 transitions. [2020-10-28 13:17:49,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:49,225 INFO L276 IsEmpty]: Start isEmpty. Operand 16415 states and 17312 transitions. [2020-10-28 13:17:49,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1348 [2020-10-28 13:17:49,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:49,263 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:17:49,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:17:49,263 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:49,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1224588562, now seen corresponding path program 1 times [2020-10-28 13:17:49,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:49,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393646961] [2020-10-28 13:17:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:50,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:51,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1373 [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 794 [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:17:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:55,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:55,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:55,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:55,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:17:55,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:55,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:55,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:55,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:17:55,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:17:55,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:55,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:55,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:17:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:55,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:55,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:17:55,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:55,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:17:55,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:55,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:55,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:17:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:55,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:17:55,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:17:55,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:55,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:17:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:55,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:17:55,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:17:55,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:55,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:17:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:55,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:17:55,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:17:55,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:55,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:17:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:17:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:55,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:17:55,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-28 13:17:55,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:55,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:17:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-28 13:17:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:56,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:56,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:17:56,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:56,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:17:56,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:56,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:17:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:56,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1144 [2020-10-28 13:17:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:56,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:56,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3560 backedges. 861 proven. 304 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2020-10-28 13:17:57,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393646961] [2020-10-28 13:17:57,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:57,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:57,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040820555] [2020-10-28 13:17:57,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:57,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:57,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:57,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:57,703 INFO L87 Difference]: Start difference. First operand 16415 states and 17312 transitions. Second operand 7 states. [2020-10-28 13:18:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:02,593 INFO L93 Difference]: Finished difference Result 33839 states and 35680 transitions. [2020-10-28 13:18:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:18:02,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1347 [2020-10-28 13:18:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:02,644 INFO L225 Difference]: With dead ends: 33839 [2020-10-28 13:18:02,644 INFO L226 Difference]: Without dead ends: 17769 [2020-10-28 13:18:02,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:18:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17769 states. [2020-10-28 13:18:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17769 to 17769. [2020-10-28 13:18:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17769 states. [2020-10-28 13:18:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17769 states to 17769 states and 18710 transitions. [2020-10-28 13:18:03,000 INFO L78 Accepts]: Start accepts. Automaton has 17769 states and 18710 transitions. Word has length 1347 [2020-10-28 13:18:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:03,002 INFO L481 AbstractCegarLoop]: Abstraction has 17769 states and 18710 transitions. [2020-10-28 13:18:03,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 17769 states and 18710 transitions. [2020-10-28 13:18:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1384 [2020-10-28 13:18:03,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:03,043 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:18:03,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:18:03,043 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:03,044 INFO L82 PathProgramCache]: Analyzing trace with hash -127170852, now seen corresponding path program 1 times [2020-10-28 13:18:03,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:03,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798958998] [2020-10-28 13:18:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:03,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:08,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:08,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1409 [2020-10-28 13:18:08,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:08,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5474 [2020-10-28 13:18:08,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:08,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1194 [2020-10-28 13:18:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:18:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:09,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:09,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:09,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:18:09,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:09,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:09,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:09,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:18:09,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:18:09,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:09,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:09,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:18:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:09,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:09,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:18:09,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:09,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:18:09,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:09,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:09,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:09,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:18:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:09,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:09,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-28 13:18:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:09,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:09,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 13:18:09,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:18:09,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:09,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:18:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:09,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:09,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:18:09,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:18:09,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:09,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-28 13:18:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:09,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:09,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:18:09,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:18:09,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:09,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:09,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-28 13:18:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:09,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:09,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:18:09,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:18:09,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:09,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:18:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:10,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1180 [2020-10-28 13:18:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:10,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 13:18:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4080 backedges. 1151 proven. 2 refuted. 0 times theorem prover too weak. 2927 trivial. 0 not checked. [2020-10-28 13:18:11,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798958998] [2020-10-28 13:18:11,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:11,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:18:11,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554633827] [2020-10-28 13:18:11,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:18:11,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:11,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:18:11,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:18:11,274 INFO L87 Difference]: Start difference. First operand 17769 states and 18710 transitions. Second operand 8 states. [2020-10-28 13:18:17,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:17,868 INFO L93 Difference]: Finished difference Result 38939 states and 41143 transitions. [2020-10-28 13:18:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:18:17,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1383 [2020-10-28 13:18:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:17,933 INFO L225 Difference]: With dead ends: 38939 [2020-10-28 13:18:17,933 INFO L226 Difference]: Without dead ends: 19803 [2020-10-28 13:18:17,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:18:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2020-10-28 13:18:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 18423. [2020-10-28 13:18:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18423 states. [2020-10-28 13:18:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18423 states to 18423 states and 19271 transitions. [2020-10-28 13:18:18,343 INFO L78 Accepts]: Start accepts. Automaton has 18423 states and 19271 transitions. Word has length 1383 [2020-10-28 13:18:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:18,346 INFO L481 AbstractCegarLoop]: Abstraction has 18423 states and 19271 transitions. [2020-10-28 13:18:18,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:18:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18423 states and 19271 transitions. [2020-10-28 13:18:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1909 [2020-10-28 13:18:18,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:18,410 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:18,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:18:18,410 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash 537447383, now seen corresponding path program 1 times [2020-10-28 13:18:18,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:18,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636174329] [2020-10-28 13:18:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking...