/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:31:25,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:31:25,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:31:25,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:31:25,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:31:25,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:31:25,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:31:25,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:31:25,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:31:25,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:31:25,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:31:25,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:31:25,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:31:25,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:31:25,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:31:25,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:31:25,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:31:25,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:31:25,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:31:25,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:31:25,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:31:25,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:31:25,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:31:25,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:31:25,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:31:25,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:31:25,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:31:25,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:31:25,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:31:25,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:31:25,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:31:25,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:31:25,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:31:25,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:31:25,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:31:25,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:31:25,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:31:25,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:31:25,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:31:25,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:31:25,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:31:25,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:31:25,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:31:25,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:31:25,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:31:25,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:31:25,596 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:31:25,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:31:25,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:31:25,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:31:25,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:31:25,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:31:25,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:31:25,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:31:25,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:31:25,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:31:25,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:31:25,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:31:25,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:31:25,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:31:25,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:31:25,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:31:25,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:31:25,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:31:25,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:31:25,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:31:25,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:31:25,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:31:25,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:31:25,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:31:25,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:31:25,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:31:25,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:31:26,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:31:26,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:31:26,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:31:26,035 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:31:26,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2020-10-29 08:31:26,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090799bce/1bc5143820674fd9adef99e7e143a4a0/FLAGf1189cfcc [2020-10-29 08:31:27,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:31:27,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2020-10-29 08:31:27,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090799bce/1bc5143820674fd9adef99e7e143a4a0/FLAGf1189cfcc [2020-10-29 08:31:27,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090799bce/1bc5143820674fd9adef99e7e143a4a0 [2020-10-29 08:31:27,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:31:27,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:31:27,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:31:27,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:31:27,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:31:27,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:31:27" (1/1) ... [2020-10-29 08:31:27,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3ec7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:27, skipping insertion in model container [2020-10-29 08:31:27,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:31:27" (1/1) ... [2020-10-29 08:31:27,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:31:27,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:31:28,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:31:28,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:31:29,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:31:29,458 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:31:29,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29 WrapperNode [2020-10-29 08:31:29,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:31:29,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:31:29,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:31:29,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:31:29,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (1/1) ... [2020-10-29 08:31:29,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (1/1) ... [2020-10-29 08:31:29,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (1/1) ... [2020-10-29 08:31:29,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (1/1) ... [2020-10-29 08:31:29,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (1/1) ... [2020-10-29 08:31:29,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (1/1) ... [2020-10-29 08:31:29,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (1/1) ... [2020-10-29 08:31:29,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:31:29,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:31:29,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:31:29,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:31:29,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:31:29,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:31:29,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:31:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:31:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:31:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:31:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:31:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:31:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:31:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:31:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:31:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:31:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:31:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:31:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:31:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:31:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:31:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:31:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:31:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:31:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:31:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:31:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:31:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:31:34,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:31:34,459 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:31:34,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:31:34 BoogieIcfgContainer [2020-10-29 08:31:34,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:31:34,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:31:34,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:31:34,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:31:34,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:31:27" (1/3) ... [2020-10-29 08:31:34,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2e1f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:31:34, skipping insertion in model container [2020-10-29 08:31:34,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:31:29" (2/3) ... [2020-10-29 08:31:34,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2e1f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:31:34, skipping insertion in model container [2020-10-29 08:31:34,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:31:34" (3/3) ... [2020-10-29 08:31:34,473 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label21.c [2020-10-29 08:31:34,486 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:31:34,492 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:31:34,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:31:34,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:31:34,540 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:31:34,540 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:31:34,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:31:34,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:31:34,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:31:34,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:31:34,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:31:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:31:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 08:31:34,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:34,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:34,588 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:34,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1970436352, now seen corresponding path program 1 times [2020-10-29 08:31:34,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:34,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944310590] [2020-10-29 08:31:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:34,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:31:35,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-29 08:31:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:35,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:31:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:31:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 55 [2020-10-29 08:31:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:35,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:35,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:35,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:35,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:31:35,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:35,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:35,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:35,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:31:35,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944310590] [2020-10-29 08:31:35,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:31:35,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:31:35,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562115922] [2020-10-29 08:31:35,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:31:35,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:35,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:31:35,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:31:35,816 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:31:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:48,431 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-29 08:31:48,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:31:48,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-29 08:31:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:48,474 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:31:48,475 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:31:48,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:31:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:31:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:31:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-29 08:31:48,677 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 65 [2020-10-29 08:31:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:48,680 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-29 08:31:48,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:31:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-29 08:31:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 08:31:48,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:48,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:48,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:31:48,697 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:48,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash 150913573, now seen corresponding path program 1 times [2020-10-29 08:31:48,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:48,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500158851] [2020-10-29 08:31:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:48,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 08:31:49,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:31:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-10-29 08:31:49,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 08:31:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 08:31:49,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:49,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:31:49,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:31:49,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:31:49,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:31:49,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:31:49,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500158851] [2020-10-29 08:31:49,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:49,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:31:49,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126627492] [2020-10-29 08:31:49,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:31:49,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:49,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:31:49,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:31:49,841 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 5 states. [2020-10-29 08:31:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:59,553 INFO L93 Difference]: Finished difference Result 6407 states and 10822 transitions. [2020-10-29 08:31:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:31:59,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-29 08:31:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:59,591 INFO L225 Difference]: With dead ends: 6407 [2020-10-29 08:31:59,591 INFO L226 Difference]: Without dead ends: 4277 [2020-10-29 08:31:59,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:31:59,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-29 08:31:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4266. [2020-10-29 08:31:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4266 states. [2020-10-29 08:31:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 6870 transitions. [2020-10-29 08:31:59,771 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 6870 transitions. Word has length 136 [2020-10-29 08:31:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:59,774 INFO L481 AbstractCegarLoop]: Abstraction has 4266 states and 6870 transitions. [2020-10-29 08:31:59,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:31:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 6870 transitions. [2020-10-29 08:31:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 08:31:59,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:59,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:59,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:31:59,788 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:59,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1859871897, now seen corresponding path program 1 times [2020-10-29 08:31:59,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:59,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698823950] [2020-10-29 08:31:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:01,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:02,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:02,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 08:32:02,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:32:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2259 [2020-10-29 08:32:02,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:02,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:32:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:32:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 08:32:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:02,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:02,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:02,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:02,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:02,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:32:02,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:02,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:32:02,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:02,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:02,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:02,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:32:02,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:02,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 08:32:02,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:02,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:02,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:32:02,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:32:02,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698823950] [2020-10-29 08:32:02,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:32:02,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:32:02,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762377359] [2020-10-29 08:32:02,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:02,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:02,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:02,775 INFO L87 Difference]: Start difference. First operand 4266 states and 6870 transitions. Second operand 7 states. [2020-10-29 08:32:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:12,725 INFO L93 Difference]: Finished difference Result 8647 states and 13974 transitions. [2020-10-29 08:32:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:32:12,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-29 08:32:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:12,765 INFO L225 Difference]: With dead ends: 8647 [2020-10-29 08:32:12,765 INFO L226 Difference]: Without dead ends: 4387 [2020-10-29 08:32:12,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2020-10-29 08:32:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 3601. [2020-10-29 08:32:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3601 states. [2020-10-29 08:32:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4972 transitions. [2020-10-29 08:32:12,919 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4972 transitions. Word has length 215 [2020-10-29 08:32:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:12,921 INFO L481 AbstractCegarLoop]: Abstraction has 3601 states and 4972 transitions. [2020-10-29 08:32:12,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4972 transitions. [2020-10-29 08:32:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-29 08:32:12,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:12,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:32:12,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:32:12,931 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:12,931 INFO L82 PathProgramCache]: Analyzing trace with hash -447327602, now seen corresponding path program 1 times [2020-10-29 08:32:12,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:12,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130073566] [2020-10-29 08:32:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:12,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:17,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:17,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:17,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:32:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 08:32:17,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:17,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 08:32:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:32:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:18,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:18,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:18,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:18,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:18,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:32:18,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:18,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:18,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:18,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:18,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:18,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:32:18,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:18,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:32:18,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:18,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:18,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:32:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 08:32:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:18,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:18,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:32:18,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 08:32:18,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:18,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:32:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:32:18,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130073566] [2020-10-29 08:32:18,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:18,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:18,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569656233] [2020-10-29 08:32:18,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:18,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:18,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:18,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:18,557 INFO L87 Difference]: Start difference. First operand 3601 states and 4972 transitions. Second operand 7 states. [2020-10-29 08:32:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:29,295 INFO L93 Difference]: Finished difference Result 7333 states and 10144 transitions. [2020-10-29 08:32:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:32:29,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-29 08:32:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:29,316 INFO L225 Difference]: With dead ends: 7333 [2020-10-29 08:32:29,317 INFO L226 Difference]: Without dead ends: 3738 [2020-10-29 08:32:29,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:29,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2020-10-29 08:32:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3647. [2020-10-29 08:32:29,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3647 states. [2020-10-29 08:32:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 4500 transitions. [2020-10-29 08:32:29,431 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 4500 transitions. Word has length 230 [2020-10-29 08:32:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:29,431 INFO L481 AbstractCegarLoop]: Abstraction has 3647 states and 4500 transitions. [2020-10-29 08:32:29,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 4500 transitions. [2020-10-29 08:32:29,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-29 08:32:29,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:29,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:29,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:32:29,438 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:29,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:29,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1893611722, now seen corresponding path program 1 times [2020-10-29 08:32:29,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:29,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980393263] [2020-10-29 08:32:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:29,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:34,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:34,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-29 08:32:34,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:32:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 08:32:34,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:34,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-29 08:32:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:32:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:34,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:34,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:34,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:34,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:34,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:34,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:34,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:32:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:34,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:32:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 08:32:34,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:34,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:32:34,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:34,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:32:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:34,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:34,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:32:34,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:34,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 08:32:34,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:34,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:34,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:32:34,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:32:35,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980393263] [2020-10-29 08:32:35,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:35,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:35,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139515955] [2020-10-29 08:32:35,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:35,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:35,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:35,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:35,118 INFO L87 Difference]: Start difference. First operand 3647 states and 4500 transitions. Second operand 7 states. [2020-10-29 08:32:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:46,206 INFO L93 Difference]: Finished difference Result 11158 states and 14027 transitions. [2020-10-29 08:32:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:32:46,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-29 08:32:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:46,245 INFO L225 Difference]: With dead ends: 11158 [2020-10-29 08:32:46,245 INFO L226 Difference]: Without dead ends: 7517 [2020-10-29 08:32:46,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:46,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2020-10-29 08:32:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 6681. [2020-10-29 08:32:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6681 states. [2020-10-29 08:32:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6681 states to 6681 states and 8001 transitions. [2020-10-29 08:32:46,450 INFO L78 Accepts]: Start accepts. Automaton has 6681 states and 8001 transitions. Word has length 281 [2020-10-29 08:32:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:46,450 INFO L481 AbstractCegarLoop]: Abstraction has 6681 states and 8001 transitions. [2020-10-29 08:32:46,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6681 states and 8001 transitions. [2020-10-29 08:32:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-29 08:32:46,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:46,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:32:46,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:32:46,458 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:46,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1725665786, now seen corresponding path program 1 times [2020-10-29 08:32:46,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:46,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666239385] [2020-10-29 08:32:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:51,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:51,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 08:32:51,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:32:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:32:51,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:51,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-29 08:32:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:32:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:51,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:51,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:51,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:32:51,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:51,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:51,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:51,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 08:32:51,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 08:32:51,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:51,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:51,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:51,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:51,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 08:32:51,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:51,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 08:32:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:52,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:52,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:32:52,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:52,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 08:32:52,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:52,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:32:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:32:52,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666239385] [2020-10-29 08:32:52,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:52,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:52,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207705274] [2020-10-29 08:32:52,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:52,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:52,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:52,330 INFO L87 Difference]: Start difference. First operand 6681 states and 8001 transitions. Second operand 7 states. [2020-10-29 08:33:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:04,917 INFO L93 Difference]: Finished difference Result 17392 states and 22515 transitions. [2020-10-29 08:33:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:33:04,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-29 08:33:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:04,974 INFO L225 Difference]: With dead ends: 17392 [2020-10-29 08:33:04,975 INFO L226 Difference]: Without dead ends: 9994 [2020-10-29 08:33:04,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:33:05,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9994 states. [2020-10-29 08:33:05,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9994 to 9720. [2020-10-29 08:33:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9720 states. [2020-10-29 08:33:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 11626 transitions. [2020-10-29 08:33:05,296 INFO L78 Accepts]: Start accepts. Automaton has 9720 states and 11626 transitions. Word has length 284 [2020-10-29 08:33:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:05,297 INFO L481 AbstractCegarLoop]: Abstraction has 9720 states and 11626 transitions. [2020-10-29 08:33:05,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:33:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 9720 states and 11626 transitions. [2020-10-29 08:33:05,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 08:33:05,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:05,310 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:33:05,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:33:05,310 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:05,311 INFO L82 PathProgramCache]: Analyzing trace with hash 894505465, now seen corresponding path program 1 times [2020-10-29 08:33:05,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:05,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684017497] [2020-10-29 08:33:05,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:05,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:05,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-29 08:33:10,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:33:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 08:33:10,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:10,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:33:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:33:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:10,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:10,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:10,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:10,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:33:10,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:10,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:10,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:33:10,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:10,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:10,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:33:10,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:10,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:33:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:10,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:33:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:33:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:10,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:10,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:10,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:33:10,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:10,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:33:10,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:10,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:33:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-29 08:33:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:10,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:10,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:33:10,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:33:10,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:10,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 08:33:10,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:10,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 244 proven. 93 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 08:33:11,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684017497] [2020-10-29 08:33:11,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:11,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:33:11,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395671900] [2020-10-29 08:33:11,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:11,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:11,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:11,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:11,153 INFO L87 Difference]: Start difference. First operand 9720 states and 11626 transitions. Second operand 7 states. [2020-10-29 08:33:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:22,438 INFO L93 Difference]: Finished difference Result 25304 states and 31123 transitions. [2020-10-29 08:33:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:33:22,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-29 08:33:22,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:22,490 INFO L225 Difference]: With dead ends: 25304 [2020-10-29 08:33:22,490 INFO L226 Difference]: Without dead ends: 15590 [2020-10-29 08:33:22,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:33:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15590 states. [2020-10-29 08:33:22,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15590 to 15506. [2020-10-29 08:33:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15506 states. [2020-10-29 08:33:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15506 states to 15506 states and 18509 transitions. [2020-10-29 08:33:22,832 INFO L78 Accepts]: Start accepts. Automaton has 15506 states and 18509 transitions. Word has length 338 [2020-10-29 08:33:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:22,833 INFO L481 AbstractCegarLoop]: Abstraction has 15506 states and 18509 transitions. [2020-10-29 08:33:22,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:33:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 15506 states and 18509 transitions. [2020-10-29 08:33:22,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 08:33:22,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:22,847 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:33:22,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:33:22,848 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:22,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1183591989, now seen corresponding path program 1 times [2020-10-29 08:33:22,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:22,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839039889] [2020-10-29 08:33:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:23,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:27,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:27,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-29 08:33:27,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:33:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 08:33:27,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:27,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-29 08:33:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:33:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:28,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:28,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:28,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:28,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:28,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:33:28,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:28,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:28,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:28,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:28,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:33:28,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:28,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:33:28,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:28,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:33:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:28,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:33:28,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:33:28,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:28,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:33:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 08:33:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:28,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:33:28,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 08:33:28,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:28,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:33:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 08:33:28,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839039889] [2020-10-29 08:33:28,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:28,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:33:28,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496810979] [2020-10-29 08:33:28,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:33:28,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:28,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:33:28,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:33:28,610 INFO L87 Difference]: Start difference. First operand 15506 states and 18509 transitions. Second operand 8 states. [2020-10-29 08:33:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:45,482 INFO L93 Difference]: Finished difference Result 38977 states and 47477 transitions. [2020-10-29 08:33:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:33:45,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2020-10-29 08:33:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:45,561 INFO L225 Difference]: With dead ends: 38977 [2020-10-29 08:33:45,561 INFO L226 Difference]: Without dead ends: 21231 [2020-10-29 08:33:45,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:33:45,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21231 states. [2020-10-29 08:33:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21231 to 19797. [2020-10-29 08:33:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19797 states. [2020-10-29 08:33:46,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19797 states to 19797 states and 21978 transitions. [2020-10-29 08:33:46,038 INFO L78 Accepts]: Start accepts. Automaton has 19797 states and 21978 transitions. Word has length 355 [2020-10-29 08:33:46,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:46,038 INFO L481 AbstractCegarLoop]: Abstraction has 19797 states and 21978 transitions. [2020-10-29 08:33:46,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:33:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 19797 states and 21978 transitions. [2020-10-29 08:33:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-29 08:33:46,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:46,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:33:46,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:33:46,065 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:46,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1255154697, now seen corresponding path program 1 times [2020-10-29 08:33:46,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:46,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473323898] [2020-10-29 08:33:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:46,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-29 08:33:51,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:33:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 08:33:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:33:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-29 08:33:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:51,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:51,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:51,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:33:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:51,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:33:51,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:33:51,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:33:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:51,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:33:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:33:51,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 08:33:51,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 08:33:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-29 08:33:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:51,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:51,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:33:51,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:33:51,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:51,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 08:33:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 244 proven. 93 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 08:33:52,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473323898] [2020-10-29 08:33:52,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:52,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:33:52,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373261530] [2020-10-29 08:33:52,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:52,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:52,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:52,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:52,114 INFO L87 Difference]: Start difference. First operand 19797 states and 21978 transitions. Second operand 7 states. [2020-10-29 08:34:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:01,899 INFO L93 Difference]: Finished difference Result 47044 states and 54588 transitions. [2020-10-29 08:34:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:34:01,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 474 [2020-10-29 08:34:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:01,994 INFO L225 Difference]: With dead ends: 47044 [2020-10-29 08:34:01,994 INFO L226 Difference]: Without dead ends: 26545 [2020-10-29 08:34:02,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:34:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26545 states. [2020-10-29 08:34:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26545 to 26361. [2020-10-29 08:34:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26361 states. [2020-10-29 08:34:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26361 states to 26361 states and 29488 transitions. [2020-10-29 08:34:02,675 INFO L78 Accepts]: Start accepts. Automaton has 26361 states and 29488 transitions. Word has length 474 [2020-10-29 08:34:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:02,676 INFO L481 AbstractCegarLoop]: Abstraction has 26361 states and 29488 transitions. [2020-10-29 08:34:02,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:34:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 26361 states and 29488 transitions. [2020-10-29 08:34:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-29 08:34:02,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:02,704 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:34:02,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:34:02,704 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:02,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:02,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1932136845, now seen corresponding path program 1 times [2020-10-29 08:34:02,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:02,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189461174] [2020-10-29 08:34:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:02,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:07,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:07,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-29 08:34:07,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:34:07,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:34:07,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:07,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:34:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-29 08:34:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:07,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:07,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:07,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:07,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:07,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:34:07,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:07,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:08,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:08,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:34:08,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:34:08,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:08,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:34:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:34:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:08,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:08,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:08,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 08:34:08,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-29 08:34:08,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:08,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 249 [2020-10-29 08:34:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-29 08:34:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:08,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:34:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:34:08,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:08,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-29 08:34:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 244 proven. 149 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 08:34:09,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189461174] [2020-10-29 08:34:09,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:09,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:34:09,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441953868] [2020-10-29 08:34:09,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:34:09,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:09,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:34:09,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:34:09,289 INFO L87 Difference]: Start difference. First operand 26361 states and 29488 transitions. Second operand 7 states. [2020-10-29 08:34:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:24,104 INFO L93 Difference]: Finished difference Result 61764 states and 73797 transitions. [2020-10-29 08:34:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:34:24,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2020-10-29 08:34:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:24,222 INFO L225 Difference]: With dead ends: 61764 [2020-10-29 08:34:24,222 INFO L226 Difference]: Without dead ends: 35409 [2020-10-29 08:34:24,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:34:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35409 states. [2020-10-29 08:34:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35409 to 34963. [2020-10-29 08:34:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34963 states. [2020-10-29 08:34:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34963 states to 34963 states and 38891 transitions. [2020-10-29 08:34:25,073 INFO L78 Accepts]: Start accepts. Automaton has 34963 states and 38891 transitions. Word has length 535 [2020-10-29 08:34:25,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:25,074 INFO L481 AbstractCegarLoop]: Abstraction has 34963 states and 38891 transitions. [2020-10-29 08:34:25,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:34:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 34963 states and 38891 transitions. [2020-10-29 08:34:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-29 08:34:25,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:25,105 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:34:25,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:34:25,105 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:25,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1252911059, now seen corresponding path program 1 times [2020-10-29 08:34:25,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:25,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660740190] [2020-10-29 08:34:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:25,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:30,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-29 08:34:30,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:34:30,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 08:34:30,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:30,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:34:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 08:34:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-29 08:34:30,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:30,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:30,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:30,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:34:30,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:30,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:30,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:30,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:30,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:30,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:30,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:34:30,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:34:30,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:30,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 08:34:30,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:30,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 08:34:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:30,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:34:30,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:34:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-29 08:34:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:30,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 08:34:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-29 08:34:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:31,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:31,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:34:31,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:31,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 08:34:31,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:31,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:31,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:31,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:34:31,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 343 proven. 149 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 08:34:31,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660740190] [2020-10-29 08:34:31,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:31,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:34:31,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904829126] [2020-10-29 08:34:31,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:34:31,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:31,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:34:31,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:34:31,408 INFO L87 Difference]: Start difference. First operand 34963 states and 38891 transitions. Second operand 8 states. [2020-10-29 08:34:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:42,394 INFO L93 Difference]: Finished difference Result 90603 states and 103077 transitions. [2020-10-29 08:34:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:34:42,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 547 [2020-10-29 08:34:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:42,578 INFO L225 Difference]: With dead ends: 90603 [2020-10-29 08:34:42,578 INFO L226 Difference]: Without dead ends: 55646 [2020-10-29 08:34:42,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:34:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55646 states. [2020-10-29 08:34:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55646 to 54774. [2020-10-29 08:34:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54774 states. [2020-10-29 08:34:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54774 states to 54774 states and 60819 transitions. [2020-10-29 08:34:43,550 INFO L78 Accepts]: Start accepts. Automaton has 54774 states and 60819 transitions. Word has length 547 [2020-10-29 08:34:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:43,550 INFO L481 AbstractCegarLoop]: Abstraction has 54774 states and 60819 transitions. [2020-10-29 08:34:43,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:34:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 54774 states and 60819 transitions. [2020-10-29 08:34:43,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-29 08:34:43,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:43,576 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:34:43,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:34:43,576 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:43,577 INFO L82 PathProgramCache]: Analyzing trace with hash 178919893, now seen corresponding path program 1 times [2020-10-29 08:34:43,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:43,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506145870] [2020-10-29 08:34:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:44,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:48,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:48,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-29 08:34:48,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:34:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:34:48,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:48,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-10-29 08:34:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:34:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:49,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:49,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:34:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:49,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:49,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:49,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:34:49,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:34:49,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:49,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:34:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:49,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:49,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 08:34:49,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:34:49,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:49,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:49,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:49,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-29 08:34:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:49,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:49,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:34:49,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:34:49,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:49,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:34:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:34:49,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-29 08:34:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:49,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:49,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 08:34:49,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 08:34:49,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:49,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 08:34:49,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-29 08:34:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:49,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:49,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:34:49,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 08:34:49,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:49,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-29 08:34:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 540 proven. 113 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2020-10-29 08:34:49,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506145870] [2020-10-29 08:34:49,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:49,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:34:49,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149900569] [2020-10-29 08:34:49,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:34:49,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:49,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:34:49,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:34:49,942 INFO L87 Difference]: Start difference. First operand 54774 states and 60819 transitions. Second operand 7 states.