/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:03:18,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:03:18,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:03:18,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:03:18,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:03:18,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:03:18,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:03:18,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:03:18,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:03:18,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:03:18,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:03:18,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:03:18,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:03:18,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:03:18,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:03:18,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:03:18,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:03:18,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:03:18,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:03:18,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:03:18,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:03:18,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:03:18,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:03:18,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:03:18,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:03:18,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:03:18,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:03:18,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:03:18,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:03:18,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:03:18,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:03:18,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:03:18,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:03:18,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:03:18,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:03:18,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:03:18,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:03:18,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:03:18,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:03:18,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:03:18,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:03:18,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:03:18,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:03:18,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:03:18,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:03:18,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:03:18,674 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:03:18,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:03:18,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:03:18,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:03:18,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:03:18,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:03:18,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:03:18,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:03:18,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:03:18,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:03:18,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:03:18,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:03:18,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:03:18,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:03:18,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:03:18,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:03:18,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:03:18,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:03:18,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:03:18,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:03:18,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:03:18,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:03:18,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:03:18,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:03:18,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:03:18,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:03:19,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:03:19,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:03:19,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:03:19,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:03:19,197 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:03:19,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2020-10-28 13:03:19,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a92398a/00b7e547ab4b40e08a968c823f422e2a/FLAG8e2b94fad [2020-10-28 13:03:20,372 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:03:20,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2020-10-28 13:03:20,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a92398a/00b7e547ab4b40e08a968c823f422e2a/FLAG8e2b94fad [2020-10-28 13:03:20,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a92398a/00b7e547ab4b40e08a968c823f422e2a [2020-10-28 13:03:20,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:03:20,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:03:20,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:03:20,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:03:20,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:03:20,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:03:20" (1/1) ... [2020-10-28 13:03:20,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@847d14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:20, skipping insertion in model container [2020-10-28 13:03:20,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:03:20" (1/1) ... [2020-10-28 13:03:20,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:03:20,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:03:21,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:03:21,542 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:03:21,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:03:21,902 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:03:21,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21 WrapperNode [2020-10-28 13:03:21,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:03:21,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:03:21,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:03:21,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:03:21,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (1/1) ... [2020-10-28 13:03:21,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (1/1) ... [2020-10-28 13:03:21,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (1/1) ... [2020-10-28 13:03:21,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (1/1) ... [2020-10-28 13:03:22,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (1/1) ... [2020-10-28 13:03:22,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (1/1) ... [2020-10-28 13:03:22,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (1/1) ... [2020-10-28 13:03:22,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:03:22,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:03:22,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:03:22,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:03:22,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:03:22,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:03:22,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:03:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:03:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:03:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:03:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:03:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:03:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:03:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:03:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:03:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:03:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:03:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:03:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:03:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:03:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:03:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:03:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:03:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:03:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:03:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:03:26,447 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:03:26,447 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:03:26,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:03:26 BoogieIcfgContainer [2020-10-28 13:03:26,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:03:26,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:03:26,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:03:26,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:03:26,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:03:20" (1/3) ... [2020-10-28 13:03:26,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a504875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:03:26, skipping insertion in model container [2020-10-28 13:03:26,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:21" (2/3) ... [2020-10-28 13:03:26,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a504875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:03:26, skipping insertion in model container [2020-10-28 13:03:26,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:03:26" (3/3) ... [2020-10-28 13:03:26,460 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label17.c [2020-10-28 13:03:26,473 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:03:26,480 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:03:26,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:03:26,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:03:26,526 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:03:26,526 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:03:26,526 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:03:26,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:03:26,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:03:26,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:03:26,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:03:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:03:26,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 13:03:26,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:26,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:26,590 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:26,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:26,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1574864969, now seen corresponding path program 1 times [2020-10-28 13:03:26,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:26,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631312777] [2020-10-28 13:03:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:27,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:27,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:03:27,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:27,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-28 13:03:27,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:27,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:03:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:03:27,758 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:03:27,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:27,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:27,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:03:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:27,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:27,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631312777] [2020-10-28 13:03:27,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:27,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:03:27,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461609721] [2020-10-28 13:03:27,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:03:27,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:27,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:03:27,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:03:27,866 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:03:28,048 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:03:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:37,189 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-28 13:03:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:03:37,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-28 13:03:37,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:37,215 INFO L225 Difference]: With dead ends: 1208 [2020-10-28 13:03:37,216 INFO L226 Difference]: Without dead ends: 703 [2020-10-28 13:03:37,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:03:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-28 13:03:37,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-28 13:03:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-28 13:03:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-28 13:03:37,399 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 70 [2020-10-28 13:03:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:37,400 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-28 13:03:37,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:03:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-28 13:03:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 13:03:37,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:37,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:03:37,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:03:37,409 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:37,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2085188893, now seen corresponding path program 1 times [2020-10-28 13:03:37,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:37,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625040591] [2020-10-28 13:03:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:37,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:38,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:39,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:39,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:39,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 13:03:39,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:03:39,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-28 13:03:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:39,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:03:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:03:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:39,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:39,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:39,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:03:39,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:39,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:39,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:39,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:39,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:03:39,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 13:03:39,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:39,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:03:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:40,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625040591] [2020-10-28 13:03:40,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:40,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:03:40,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806914083] [2020-10-28 13:03:40,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:40,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:40,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:40,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:40,052 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-28 13:03:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:54,934 INFO L93 Difference]: Finished difference Result 2072 states and 3049 transitions. [2020-10-28 13:03:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:54,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-28 13:03:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:54,954 INFO L225 Difference]: With dead ends: 2072 [2020-10-28 13:03:54,954 INFO L226 Difference]: Without dead ends: 1381 [2020-10-28 13:03:54,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-28 13:03:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1360. [2020-10-28 13:03:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2020-10-28 13:03:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1889 transitions. [2020-10-28 13:03:55,049 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1889 transitions. Word has length 149 [2020-10-28 13:03:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:55,052 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 1889 transitions. [2020-10-28 13:03:55,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1889 transitions. [2020-10-28 13:03:55,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 13:03:55,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:55,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:55,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:03:55,070 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:55,071 INFO L82 PathProgramCache]: Analyzing trace with hash -231249765, now seen corresponding path program 1 times [2020-10-28 13:03:55,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:55,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305208474] [2020-10-28 13:03:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:55,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:55,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 13:03:55,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-28 13:03:55,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:55,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:03:55,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:55,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:56,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:56,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:56,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:03:56,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:56,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:56,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:56,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:56,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:03:56,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 13:03:56,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:56,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:03:56,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:56,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305208474] [2020-10-28 13:03:56,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:56,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:03:56,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613817553] [2020-10-28 13:03:56,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:56,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:56,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:56,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:56,392 INFO L87 Difference]: Start difference. First operand 1360 states and 1889 transitions. Second operand 7 states. [2020-10-28 13:04:06,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:06,859 INFO L93 Difference]: Finished difference Result 4071 states and 5764 transitions. [2020-10-28 13:04:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:04:06,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-10-28 13:04:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:06,888 INFO L225 Difference]: With dead ends: 4071 [2020-10-28 13:04:06,888 INFO L226 Difference]: Without dead ends: 2717 [2020-10-28 13:04:06,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:04:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2020-10-28 13:04:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2339. [2020-10-28 13:04:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2339 states. [2020-10-28 13:04:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3003 transitions. [2020-10-28 13:04:06,976 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3003 transitions. Word has length 153 [2020-10-28 13:04:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:06,977 INFO L481 AbstractCegarLoop]: Abstraction has 2339 states and 3003 transitions. [2020-10-28 13:04:06,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:04:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3003 transitions. [2020-10-28 13:04:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-28 13:04:06,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:06,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:04:06,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:04:06,982 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:06,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:06,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1020079649, now seen corresponding path program 1 times [2020-10-28 13:04:06,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:06,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708577569] [2020-10-28 13:04:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:10,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:10,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 13:04:10,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:04:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3268 [2020-10-28 13:04:10,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:10,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:04:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:04:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:04:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:10,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:10,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:10,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:10,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:04:10,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:10,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:04:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:10,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:10,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:10,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:04:10,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-28 13:04:10,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:10,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:04:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:04:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:04:11,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708577569] [2020-10-28 13:04:11,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:04:11,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:04:11,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236270230] [2020-10-28 13:04:11,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:11,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:11,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:11,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:11,491 INFO L87 Difference]: Start difference. First operand 2339 states and 3003 transitions. Second operand 7 states. [2020-10-28 13:04:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:20,484 INFO L93 Difference]: Finished difference Result 5037 states and 6405 transitions. [2020-10-28 13:04:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:04:20,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-28 13:04:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:20,504 INFO L225 Difference]: With dead ends: 5037 [2020-10-28 13:04:20,504 INFO L226 Difference]: Without dead ends: 2704 [2020-10-28 13:04:20,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:04:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2020-10-28 13:04:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2659. [2020-10-28 13:04:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2659 states. [2020-10-28 13:04:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3338 transitions. [2020-10-28 13:04:20,593 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3338 transitions. Word has length 270 [2020-10-28 13:04:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:20,594 INFO L481 AbstractCegarLoop]: Abstraction has 2659 states and 3338 transitions. [2020-10-28 13:04:20,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:04:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3338 transitions. [2020-10-28 13:04:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-28 13:04:20,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:20,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:20,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:04:20,602 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:20,603 INFO L82 PathProgramCache]: Analyzing trace with hash 752842942, now seen corresponding path program 1 times [2020-10-28 13:04:20,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:20,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608583728] [2020-10-28 13:04:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:22,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:22,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-28 13:04:22,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2170 [2020-10-28 13:04:22,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:22,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-28 13:04:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 13:04:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:23,134 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:04:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:23,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:23,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:23,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:04:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:23,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:04:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:23,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:23,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:23,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-28 13:04:23,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:23,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:23,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:23,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:23,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-28 13:04:23,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:04:24,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608583728] [2020-10-28 13:04:24,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:24,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:04:24,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008755195] [2020-10-28 13:04:24,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:04:24,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:24,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:04:24,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:04:24,003 INFO L87 Difference]: Start difference. First operand 2659 states and 3338 transitions. Second operand 6 states. [2020-10-28 13:04:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:37,594 INFO L93 Difference]: Finished difference Result 7534 states and 10163 transitions. [2020-10-28 13:04:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:04:37,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 356 [2020-10-28 13:04:37,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:37,626 INFO L225 Difference]: With dead ends: 7534 [2020-10-28 13:04:37,626 INFO L226 Difference]: Without dead ends: 5188 [2020-10-28 13:04:37,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:04:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2020-10-28 13:04:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 4874. [2020-10-28 13:04:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4874 states. [2020-10-28 13:04:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6314 transitions. [2020-10-28 13:04:37,776 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6314 transitions. Word has length 356 [2020-10-28 13:04:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:37,777 INFO L481 AbstractCegarLoop]: Abstraction has 4874 states and 6314 transitions. [2020-10-28 13:04:37,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:04:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6314 transitions. [2020-10-28 13:04:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-28 13:04:37,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:37,794 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:37,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:04:37,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:37,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1055750923, now seen corresponding path program 1 times [2020-10-28 13:04:37,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:37,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374460264] [2020-10-28 13:04:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:43,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:43,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-28 13:04:43,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:04:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-28 13:04:43,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:43,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:04:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:04:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 13:04:43,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:04:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:43,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:43,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:43,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:43,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:04:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:43,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:04:43,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:43,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:43,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:04:43,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:43,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 13:04:43,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:43,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:04:43,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:04:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:04:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:43,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:44,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:44,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:04:44,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-28 13:04:44,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:44,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:04:44,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:44,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-28 13:04:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:04:44,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:04:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:44,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:04:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-28 13:04:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:44,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:44,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:04:44,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:04:44,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:44,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 13:04:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:44,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 425 proven. 227 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 13:04:44,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374460264] [2020-10-28 13:04:44,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:44,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:04:44,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813149568] [2020-10-28 13:04:44,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:04:44,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:44,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:04:44,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:04:44,907 INFO L87 Difference]: Start difference. First operand 4874 states and 6314 transitions. Second operand 8 states. [2020-10-28 13:04:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:59,827 INFO L93 Difference]: Finished difference Result 14547 states and 19707 transitions. [2020-10-28 13:04:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:04:59,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 524 [2020-10-28 13:04:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:59,882 INFO L225 Difference]: With dead ends: 14547 [2020-10-28 13:04:59,882 INFO L226 Difference]: Without dead ends: 8396 [2020-10-28 13:04:59,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:04:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8396 states. [2020-10-28 13:05:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8396 to 7699. [2020-10-28 13:05:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7699 states. [2020-10-28 13:05:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 9205 transitions. [2020-10-28 13:05:00,193 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 9205 transitions. Word has length 524 [2020-10-28 13:05:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:00,194 INFO L481 AbstractCegarLoop]: Abstraction has 7699 states and 9205 transitions. [2020-10-28 13:05:00,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:05:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 9205 transitions. [2020-10-28 13:05:00,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-28 13:05:00,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:00,212 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:00,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:05:00,212 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:00,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:00,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1351400316, now seen corresponding path program 1 times [2020-10-28 13:05:00,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:00,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831039834] [2020-10-28 13:05:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:05,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-28 13:05:05,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 13:05:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:05,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:05:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:05:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:05,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:05,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:05,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:05,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:05:05,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:05,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:05,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:05,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:05:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-28 13:05:05,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:05,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:05:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:06,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:05:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:06,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:06,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:06,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:06,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 13:05:06,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:06,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:06,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:05:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:05:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:06,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:06,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:05:06,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:05:06,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:06,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 13:05:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 298 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 13:05:07,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831039834] [2020-10-28 13:05:07,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:07,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:07,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849204076] [2020-10-28 13:05:07,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:07,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:07,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:07,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:07,177 INFO L87 Difference]: Start difference. First operand 7699 states and 9205 transitions. Second operand 7 states. [2020-10-28 13:05:20,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:20,282 INFO L93 Difference]: Finished difference Result 17020 states and 20385 transitions. [2020-10-28 13:05:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:05:20,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-28 13:05:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:20,326 INFO L225 Difference]: With dead ends: 17020 [2020-10-28 13:05:20,326 INFO L226 Difference]: Without dead ends: 9634 [2020-10-28 13:05:20,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:05:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9634 states. [2020-10-28 13:05:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9634 to 9306. [2020-10-28 13:05:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9306 states. [2020-10-28 13:05:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 11048 transitions. [2020-10-28 13:05:20,594 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 11048 transitions. Word has length 534 [2020-10-28 13:05:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:20,595 INFO L481 AbstractCegarLoop]: Abstraction has 9306 states and 11048 transitions. [2020-10-28 13:05:20,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 11048 transitions. [2020-10-28 13:05:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-28 13:05:20,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:20,617 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:20,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:05:20,617 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:20,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:20,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1846771188, now seen corresponding path program 1 times [2020-10-28 13:05:20,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:20,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284433237] [2020-10-28 13:05:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:20,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:23,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:23,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-28 13:05:23,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2687 [2020-10-28 13:05:23,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:23,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:05:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 13:05:23,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:23,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:23,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:23,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:23,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:05:23,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:23,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:23,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:23,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:23,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:23,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:05:23,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:23,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:23,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:23,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:24,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:24,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:05:24,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 278 proven. 63 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:05:24,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284433237] [2020-10-28 13:05:24,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:24,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:05:24,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670880465] [2020-10-28 13:05:24,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:05:24,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:24,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:05:24,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:05:24,403 INFO L87 Difference]: Start difference. First operand 9306 states and 11048 transitions. Second operand 6 states. [2020-10-28 13:05:26,374 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:05:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:32,698 INFO L93 Difference]: Finished difference Result 21261 states and 26205 transitions. [2020-10-28 13:05:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:05:32,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 546 [2020-10-28 13:05:32,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:32,751 INFO L225 Difference]: With dead ends: 21261 [2020-10-28 13:05:32,751 INFO L226 Difference]: Without dead ends: 13496 [2020-10-28 13:05:32,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:05:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13496 states. [2020-10-28 13:05:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13496 to 13464. [2020-10-28 13:05:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13464 states. [2020-10-28 13:05:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 16331 transitions. [2020-10-28 13:05:33,119 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 16331 transitions. Word has length 546 [2020-10-28 13:05:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:33,120 INFO L481 AbstractCegarLoop]: Abstraction has 13464 states and 16331 transitions. [2020-10-28 13:05:33,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:05:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 16331 transitions. [2020-10-28 13:05:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-28 13:05:33,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:33,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:33,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:05:33,130 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:33,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1825686975, now seen corresponding path program 1 times [2020-10-28 13:05:33,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:33,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446472072] [2020-10-28 13:05:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:38,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:38,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-28 13:05:38,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:38,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4868 [2020-10-28 13:05:38,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:38,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:05:38,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:38,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:38,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:38,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:05:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:38,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:38,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:38,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:38,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:05:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:38,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:38,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:38,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:05:38,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:38,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:38,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:38,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:38,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:38,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:05:38,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:05:38,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:38,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:05:38,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:05:39,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446472072] [2020-10-28 13:05:39,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:39,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:39,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463418645] [2020-10-28 13:05:39,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:39,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:39,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:39,283 INFO L87 Difference]: Start difference. First operand 13464 states and 16331 transitions. Second operand 7 states. [2020-10-28 13:05:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:51,365 INFO L93 Difference]: Finished difference Result 26726 states and 32633 transitions. [2020-10-28 13:05:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:05:51,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-28 13:05:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:51,422 INFO L225 Difference]: With dead ends: 26726 [2020-10-28 13:05:51,422 INFO L226 Difference]: Without dead ends: 13575 [2020-10-28 13:05:51,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:05:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13575 states. [2020-10-28 13:05:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13575 to 13511. [2020-10-28 13:05:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13511 states. [2020-10-28 13:05:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13511 states to 13511 states and 15553 transitions. [2020-10-28 13:05:51,756 INFO L78 Accepts]: Start accepts. Automaton has 13511 states and 15553 transitions. Word has length 549 [2020-10-28 13:05:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:51,757 INFO L481 AbstractCegarLoop]: Abstraction has 13511 states and 15553 transitions. [2020-10-28 13:05:51,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 13511 states and 15553 transitions. [2020-10-28 13:05:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-28 13:05:51,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:51,767 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:51,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:05:51,767 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:51,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:51,768 INFO L82 PathProgramCache]: Analyzing trace with hash -103482942, now seen corresponding path program 1 times [2020-10-28 13:05:51,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:51,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580318282] [2020-10-28 13:05:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:52,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:55,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:55,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-28 13:05:55,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3536 [2020-10-28 13:05:55,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:55,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 13:05:55,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:55,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:55,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:55,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:55,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:05:55,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:55,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:55,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:55,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:55,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:55,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:05:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:55,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:55,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:56,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:56,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:56,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:56,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:05:56,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:56,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:05:56,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:56,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:56,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 13:05:56,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:05:56,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:56,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:56,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:56,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:05:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:05:56,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580318282] [2020-10-28 13:05:56,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:56,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:56,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265396407] [2020-10-28 13:05:56,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:56,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:56,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:56,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:56,812 INFO L87 Difference]: Start difference. First operand 13511 states and 15553 transitions. Second operand 7 states. [2020-10-28 13:06:01,147 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:06:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:09,254 INFO L93 Difference]: Finished difference Result 28649 states and 33235 transitions. [2020-10-28 13:06:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:06:09,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 561 [2020-10-28 13:06:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:09,308 INFO L225 Difference]: With dead ends: 28649 [2020-10-28 13:06:09,309 INFO L226 Difference]: Without dead ends: 16679 [2020-10-28 13:06:09,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:06:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16679 states. [2020-10-28 13:06:09,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16679 to 16024. [2020-10-28 13:06:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16024 states. [2020-10-28 13:06:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16024 states to 16024 states and 18419 transitions. [2020-10-28 13:06:09,702 INFO L78 Accepts]: Start accepts. Automaton has 16024 states and 18419 transitions. Word has length 561 [2020-10-28 13:06:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:09,704 INFO L481 AbstractCegarLoop]: Abstraction has 16024 states and 18419 transitions. [2020-10-28 13:06:09,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:06:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 16024 states and 18419 transitions. [2020-10-28 13:06:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2020-10-28 13:06:09,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:09,720 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:09,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:06:09,720 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1134292789, now seen corresponding path program 1 times [2020-10-28 13:06:09,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:09,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121871295] [2020-10-28 13:06:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:10,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:14,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:14,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-28 13:06:14,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:06:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 13:06:14,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:14,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:06:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 13:06:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:15,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:15,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:06:15,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:15,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:15,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:15,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:15,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:06:15,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:06:15,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:15,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:15,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:06:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:15,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:15,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:15,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:06:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 13:06:15,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:15,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:06:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:06:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 13:06:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:15,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-28 13:06:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:15,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:15,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:15,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:06:15,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:06:15,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:15,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 13:06:15,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:15,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 433 proven. 81 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-28 13:06:16,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121871295] [2020-10-28 13:06:16,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:16,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:06:16,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516778173] [2020-10-28 13:06:16,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:06:16,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:06:16,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:06:16,025 INFO L87 Difference]: Start difference. First operand 16024 states and 18419 transitions. Second operand 7 states. [2020-10-28 13:06:30,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:30,393 INFO L93 Difference]: Finished difference Result 36996 states and 43492 transitions. [2020-10-28 13:06:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:06:30,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 640 [2020-10-28 13:06:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:30,466 INFO L225 Difference]: With dead ends: 36996 [2020-10-28 13:06:30,467 INFO L226 Difference]: Without dead ends: 22820 [2020-10-28 13:06:30,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:06:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22820 states. [2020-10-28 13:06:30,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22820 to 19736. [2020-10-28 13:06:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19736 states. [2020-10-28 13:06:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19736 states to 19736 states and 23217 transitions. [2020-10-28 13:06:30,950 INFO L78 Accepts]: Start accepts. Automaton has 19736 states and 23217 transitions. Word has length 640 [2020-10-28 13:06:30,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:30,951 INFO L481 AbstractCegarLoop]: Abstraction has 19736 states and 23217 transitions. [2020-10-28 13:06:30,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:06:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 19736 states and 23217 transitions. [2020-10-28 13:06:30,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-28 13:06:30,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:30,967 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:30,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:06:30,968 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:30,968 INFO L82 PathProgramCache]: Analyzing trace with hash -140614580, now seen corresponding path program 1 times [2020-10-28 13:06:30,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:30,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17811871] [2020-10-28 13:06:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:36,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 695 [2020-10-28 13:06:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:06:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-28 13:06:36,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:36,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:06:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:06:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:36,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:36,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:36,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:36,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:06:36,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:36,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:36,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:36,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:36,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:36,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:36,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:06:36,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:06:36,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:36,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:06:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:36,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:36,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:06:36,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:06:36,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:36,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:06:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:36,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:06:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:36,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:36,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:36,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:06:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:06:36,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:36,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:06:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:36,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-28 13:06:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:36,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:37,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:37,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:06:37,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:06:37,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:37,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 13:06:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 492 proven. 81 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-28 13:06:37,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17811871] [2020-10-28 13:06:37,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:37,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:06:37,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534892744] [2020-10-28 13:06:37,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:06:37,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:37,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:06:37,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:06:37,317 INFO L87 Difference]: Start difference. First operand 19736 states and 23217 transitions. Second operand 7 states. [2020-10-28 13:06:39,852 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:06:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:51,534 INFO L93 Difference]: Finished difference Result 45833 states and 55887 transitions. [2020-10-28 13:06:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:06:51,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 677 [2020-10-28 13:06:51,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:51,616 INFO L225 Difference]: With dead ends: 45833 [2020-10-28 13:06:51,616 INFO L226 Difference]: Without dead ends: 24841 [2020-10-28 13:06:51,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:06:51,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24841 states. [2020-10-28 13:06:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24841 to 24682. [2020-10-28 13:06:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24682 states. [2020-10-28 13:06:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24682 states to 24682 states and 28144 transitions. [2020-10-28 13:06:52,227 INFO L78 Accepts]: Start accepts. Automaton has 24682 states and 28144 transitions. Word has length 677 [2020-10-28 13:06:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:52,228 INFO L481 AbstractCegarLoop]: Abstraction has 24682 states and 28144 transitions. [2020-10-28 13:06:52,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:06:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24682 states and 28144 transitions. [2020-10-28 13:06:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2020-10-28 13:06:52,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:52,246 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:52,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:06:52,246 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:52,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1478507846, now seen corresponding path program 1 times [2020-10-28 13:06:52,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:52,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775992344] [2020-10-28 13:06:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:57,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 735 [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 577 [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:06:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:57,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:57,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:57,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:57,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:06:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:57,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:57,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:57,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:57,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:57,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:06:57,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:06:57,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:57,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:57,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:06:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:57,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:57,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:06:57,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:06:57,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:57,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:57,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:06:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:58,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:58,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:06:58,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:06:58,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:58,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 13:06:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:06:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:06:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:58,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:58,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:06:58,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:06:58,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:58,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 13:06:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2020-10-28 13:06:58,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775992344] [2020-10-28 13:06:58,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:58,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:06:58,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649282097] [2020-10-28 13:06:58,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:06:58,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:58,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:06:58,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:06:58,474 INFO L87 Difference]: Start difference. First operand 24682 states and 28144 transitions. Second operand 5 states.