/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:46:14,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:46:14,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:46:14,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:46:14,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:46:14,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:46:14,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:46:14,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:46:14,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:46:14,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:46:14,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:46:14,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:46:14,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:46:14,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:46:14,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:46:14,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:46:14,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:46:14,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:46:14,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:46:14,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:46:14,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:46:14,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:46:14,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:46:14,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:46:14,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:46:14,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:46:14,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:46:14,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:46:14,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:46:14,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:46:14,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:46:14,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:46:14,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:46:14,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:46:14,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:46:14,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:46:14,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:46:14,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:46:14,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:46:14,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:46:14,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:46:14,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:46:14,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:46:14,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:46:14,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:46:14,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:46:14,685 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:46:14,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:46:14,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:46:14,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:46:14,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:46:14,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:46:14,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:46:14,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:46:14,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:46:14,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:46:14,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:46:14,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:46:14,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:46:14,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:46:14,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:46:14,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:46:14,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:46:14,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:46:14,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:46:14,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:46:14,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:46:14,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:46:14,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:46:14,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:46:14,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:46:14,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:46:15,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:46:15,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:46:15,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:46:15,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:46:15,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:46:15,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label26.c [2020-10-29 06:46:15,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c1a7e5ec/62dd2c99f96543b4a84ab8c17b95f6fb/FLAG6de031dc1 [2020-10-29 06:46:16,192 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:46:16,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label26.c [2020-10-29 06:46:16,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c1a7e5ec/62dd2c99f96543b4a84ab8c17b95f6fb/FLAG6de031dc1 [2020-10-29 06:46:16,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c1a7e5ec/62dd2c99f96543b4a84ab8c17b95f6fb [2020-10-29 06:46:16,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:46:16,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:46:16,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:46:16,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:46:16,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:46:16,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:46:16" (1/1) ... [2020-10-29 06:46:16,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ae08b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:16, skipping insertion in model container [2020-10-29 06:46:16,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:46:16" (1/1) ... [2020-10-29 06:46:16,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:46:16,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:46:16,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:46:16,956 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:46:17,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:46:17,190 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:46:17,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17 WrapperNode [2020-10-29 06:46:17,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:46:17,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:46:17,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:46:17,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:46:17,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (1/1) ... [2020-10-29 06:46:17,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (1/1) ... [2020-10-29 06:46:17,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (1/1) ... [2020-10-29 06:46:17,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (1/1) ... [2020-10-29 06:46:17,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (1/1) ... [2020-10-29 06:46:17,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (1/1) ... [2020-10-29 06:46:17,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (1/1) ... [2020-10-29 06:46:17,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:46:17,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:46:17,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:46:17,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:46:17,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:46:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:46:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:46:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:46:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:46:17,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:46:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:46:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:46:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:46:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:46:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:46:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:46:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:46:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:46:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:46:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:46:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:46:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:46:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:46:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:46:19,452 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:46:19,452 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:46:19,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:46:19 BoogieIcfgContainer [2020-10-29 06:46:19,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:46:19,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:46:19,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:46:19,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:46:19,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:46:16" (1/3) ... [2020-10-29 06:46:19,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496427af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:46:19, skipping insertion in model container [2020-10-29 06:46:19,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:17" (2/3) ... [2020-10-29 06:46:19,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496427af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:46:19, skipping insertion in model container [2020-10-29 06:46:19,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:46:19" (3/3) ... [2020-10-29 06:46:19,466 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label26.c [2020-10-29 06:46:19,480 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:46:19,486 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:46:19,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:46:19,536 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:46:19,536 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:46:19,536 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:46:19,537 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:46:19,537 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:46:19,537 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:46:19,537 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:46:19,537 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:46:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:46:19,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 06:46:19,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:19,575 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] [2020-10-29 06:46:19,575 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:19,583 INFO L82 PathProgramCache]: Analyzing trace with hash 695092568, now seen corresponding path program 1 times [2020-10-29 06:46:19,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:19,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595789095] [2020-10-29 06:46:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:20,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:20,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 06:46:20,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-29 06:46:20,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:20,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 06:46:20,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:46:20,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:20,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:20,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:20,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:46:20,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:20,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:20,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595789095] [2020-10-29 06:46:20,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:20,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:46:20,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083607580] [2020-10-29 06:46:20,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:46:20,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:20,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:46:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:46:20,894 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:46:21,136 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 06:46:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:24,445 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-29 06:46:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:24,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-29 06:46:24,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:24,465 INFO L225 Difference]: With dead ends: 793 [2020-10-29 06:46:24,466 INFO L226 Difference]: Without dead ends: 432 [2020-10-29 06:46:24,477 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 [2020-10-29 06:46:24,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-29 06:46:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-29 06:46:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-29 06:46:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-29 06:46:24,569 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 46 [2020-10-29 06:46:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:24,569 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-29 06:46:24,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:46:24,570 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-29 06:46:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 06:46:24,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:24,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:24,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:46:24,577 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:24,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:24,579 INFO L82 PathProgramCache]: Analyzing trace with hash -460655852, now seen corresponding path program 1 times [2020-10-29 06:46:24,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:24,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229997188] [2020-10-29 06:46:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:24,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:26,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:26,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 06:46:26,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:26,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2047 [2020-10-29 06:46:26,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:26,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:46:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:26,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:26,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:26,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:26,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:46:26,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:26,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:27,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:27,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:46:27,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 06:46:27,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:27,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:46:27,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:27,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229997188] [2020-10-29 06:46:27,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:27,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:46:27,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297649716] [2020-10-29 06:46:27,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:27,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:27,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:27,266 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 7 states. [2020-10-29 06:46:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:30,751 INFO L93 Difference]: Finished difference Result 1276 states and 1874 transitions. [2020-10-29 06:46:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:46:30,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-29 06:46:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:30,761 INFO L225 Difference]: With dead ends: 1276 [2020-10-29 06:46:30,761 INFO L226 Difference]: Without dead ends: 856 [2020-10-29 06:46:30,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:30,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2020-10-29 06:46:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 821. [2020-10-29 06:46:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-29 06:46:30,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1124 transitions. [2020-10-29 06:46:30,826 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1124 transitions. Word has length 118 [2020-10-29 06:46:30,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:30,826 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1124 transitions. [2020-10-29 06:46:30,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1124 transitions. [2020-10-29 06:46:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 06:46:30,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:30,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:30,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:46:30,833 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:30,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash -908868464, now seen corresponding path program 1 times [2020-10-29 06:46:30,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:30,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580488189] [2020-10-29 06:46:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:31,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:33,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:33,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:33,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2298 [2020-10-29 06:46:33,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:33,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:46:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:33,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:33,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:33,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:33,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 06:46:33,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:33,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:33,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:33,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:33,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:33,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:33,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:33,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:33,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:46:33,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 06:46:33,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:33,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:46:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:33,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580488189] [2020-10-29 06:46:33,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:33,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:46:33,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116241072] [2020-10-29 06:46:33,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:33,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:33,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:33,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:33,789 INFO L87 Difference]: Start difference. First operand 821 states and 1124 transitions. Second operand 7 states. [2020-10-29 06:46:37,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:37,441 INFO L93 Difference]: Finished difference Result 2437 states and 3378 transitions. [2020-10-29 06:46:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:46:37,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-29 06:46:37,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:37,453 INFO L225 Difference]: With dead ends: 2437 [2020-10-29 06:46:37,453 INFO L226 Difference]: Without dead ends: 1622 [2020-10-29 06:46:37,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:46:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2020-10-29 06:46:37,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1600. [2020-10-29 06:46:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-10-29 06:46:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 1968 transitions. [2020-10-29 06:46:37,518 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 1968 transitions. Word has length 120 [2020-10-29 06:46:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:37,519 INFO L481 AbstractCegarLoop]: Abstraction has 1600 states and 1968 transitions. [2020-10-29 06:46:37,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 1968 transitions. [2020-10-29 06:46:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-29 06:46:37,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:37,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:37,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:46:37,526 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash 783729803, now seen corresponding path program 1 times [2020-10-29 06:46:37,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:37,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401421078] [2020-10-29 06:46:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:38,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 06:46:38,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-29 06:46:38,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:38,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:46:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 06:46:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:38,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:38,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:38,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:38,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:46:38,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:38,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:38,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:38,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:38,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 06:46:38,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:38,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:38,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:46:38,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:38,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401421078] [2020-10-29 06:46:38,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:38,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:46:38,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462431493] [2020-10-29 06:46:38,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:46:38,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:38,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:46:38,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:38,548 INFO L87 Difference]: Start difference. First operand 1600 states and 1968 transitions. Second operand 5 states. [2020-10-29 06:46:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:41,390 INFO L93 Difference]: Finished difference Result 3411 states and 4356 transitions. [2020-10-29 06:46:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:41,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-29 06:46:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:41,409 INFO L225 Difference]: With dead ends: 3411 [2020-10-29 06:46:41,409 INFO L226 Difference]: Without dead ends: 2195 [2020-10-29 06:46:41,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:46:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2020-10-29 06:46:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1994. [2020-10-29 06:46:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1994 states. [2020-10-29 06:46:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2468 transitions. [2020-10-29 06:46:41,515 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2468 transitions. Word has length 177 [2020-10-29 06:46:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:41,516 INFO L481 AbstractCegarLoop]: Abstraction has 1994 states and 2468 transitions. [2020-10-29 06:46:41,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:46:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2468 transitions. [2020-10-29 06:46:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 06:46:41,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:41,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:46:41,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:46:41,522 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:41,523 INFO L82 PathProgramCache]: Analyzing trace with hash 215091174, now seen corresponding path program 1 times [2020-10-29 06:46:41,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:41,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949910962] [2020-10-29 06:46:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:42,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:44,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:44,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 06:46:44,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2400 [2020-10-29 06:46:44,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:44,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:46:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:46:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:44,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:44,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:46:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:44,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:44,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:44,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:46:44,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 06:46:44,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:44,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:46:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:44,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:46:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:44,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:44,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:46:44,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 06:46:44,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:44,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:46:44,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:46:44,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949910962] [2020-10-29 06:46:44,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:44,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:44,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765389875] [2020-10-29 06:46:44,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:44,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:44,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:44,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:44,872 INFO L87 Difference]: Start difference. First operand 1994 states and 2468 transitions. Second operand 7 states. [2020-10-29 06:46:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:48,737 INFO L93 Difference]: Finished difference Result 4019 states and 5086 transitions. [2020-10-29 06:46:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:46:48,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-29 06:46:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:48,753 INFO L225 Difference]: With dead ends: 4019 [2020-10-29 06:46:48,753 INFO L226 Difference]: Without dead ends: 2409 [2020-10-29 06:46:48,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:46:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-10-29 06:46:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2395. [2020-10-29 06:46:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2395 states. [2020-10-29 06:46:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 2930 transitions. [2020-10-29 06:46:48,845 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 2930 transitions. Word has length 236 [2020-10-29 06:46:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:48,845 INFO L481 AbstractCegarLoop]: Abstraction has 2395 states and 2930 transitions. [2020-10-29 06:46:48,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 2930 transitions. [2020-10-29 06:46:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 06:46:48,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:48,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:46:48,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:46:48,853 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash 14580690, now seen corresponding path program 1 times [2020-10-29 06:46:48,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:48,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973156260] [2020-10-29 06:46:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:48,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:49,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-29 06:46:49,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-29 06:46:49,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:49,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:46:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 06:46:49,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:49,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:49,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:49,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:46:49,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:49,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:46:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 06:46:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:49,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:49,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:46:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:50,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:50,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:46:50,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:50,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 06:46:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:50,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:46:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 06:46:50,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973156260] [2020-10-29 06:46:50,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:50,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:46:50,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288686822] [2020-10-29 06:46:50,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:46:50,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:50,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:46:50,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:50,281 INFO L87 Difference]: Start difference. First operand 2395 states and 2930 transitions. Second operand 5 states. [2020-10-29 06:46:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:53,404 INFO L93 Difference]: Finished difference Result 5191 states and 6627 transitions. [2020-10-29 06:46:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:53,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-29 06:46:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:53,424 INFO L225 Difference]: With dead ends: 5191 [2020-10-29 06:46:53,424 INFO L226 Difference]: Without dead ends: 3180 [2020-10-29 06:46:53,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:46:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2020-10-29 06:46:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2978. [2020-10-29 06:46:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-10-29 06:46:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 3612 transitions. [2020-10-29 06:46:53,518 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 3612 transitions. Word has length 246 [2020-10-29 06:46:53,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:53,519 INFO L481 AbstractCegarLoop]: Abstraction has 2978 states and 3612 transitions. [2020-10-29 06:46:53,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:46:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 3612 transitions. [2020-10-29 06:46:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 06:46:53,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:53,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:46:53,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:46:53,525 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:53,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1831059374, now seen corresponding path program 1 times [2020-10-29 06:46:53,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:53,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053388403] [2020-10-29 06:46:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:56,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-29 06:46:56,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:56,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2903 [2020-10-29 06:46:56,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:56,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:46:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:46:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:56,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:56,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:56,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:56,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:46:56,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:56,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:56,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:56,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:56,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:46:56,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 06:46:56,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:56,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:46:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:56,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:46:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:57,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:57,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:46:57,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 06:46:57,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:57,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:46:57,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:46:57,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053388403] [2020-10-29 06:46:57,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:57,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:57,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350522153] [2020-10-29 06:46:57,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:57,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:57,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:57,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:57,268 INFO L87 Difference]: Start difference. First operand 2978 states and 3612 transitions. Second operand 7 states. [2020-10-29 06:47:00,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:00,770 INFO L93 Difference]: Finished difference Result 6768 states and 8578 transitions. [2020-10-29 06:47:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:00,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-29 06:47:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:00,798 INFO L225 Difference]: With dead ends: 6768 [2020-10-29 06:47:00,798 INFO L226 Difference]: Without dead ends: 4174 [2020-10-29 06:47:00,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:00,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4174 states. [2020-10-29 06:47:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4174 to 4148. [2020-10-29 06:47:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4148 states. [2020-10-29 06:47:00,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 5043 transitions. [2020-10-29 06:47:00,922 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 5043 transitions. Word has length 246 [2020-10-29 06:47:00,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:00,923 INFO L481 AbstractCegarLoop]: Abstraction has 4148 states and 5043 transitions. [2020-10-29 06:47:00,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 5043 transitions. [2020-10-29 06:47:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 06:47:00,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:00,929 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:00,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:47:00,930 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:00,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:00,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1208223747, now seen corresponding path program 1 times [2020-10-29 06:47:00,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:00,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533793110] [2020-10-29 06:47:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:01,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:01,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:03,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 06:47:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2572 [2020-10-29 06:47:03,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:03,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:47:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:47:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:03,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:03,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:03,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:03,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:47:03,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:03,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:03,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:03,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:47:03,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:47:03,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:03,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:47:03,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:47:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:04,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:04,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:04,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 06:47:04,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:04,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:47:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:04,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533793110] [2020-10-29 06:47:04,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:04,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:04,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985364597] [2020-10-29 06:47:04,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:04,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:04,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:04,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:04,347 INFO L87 Difference]: Start difference. First operand 4148 states and 5043 transitions. Second operand 7 states. [2020-10-29 06:47:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:09,156 INFO L93 Difference]: Finished difference Result 9327 states and 11668 transitions. [2020-10-29 06:47:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:09,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-29 06:47:09,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:09,186 INFO L225 Difference]: With dead ends: 9327 [2020-10-29 06:47:09,186 INFO L226 Difference]: Without dead ends: 5563 [2020-10-29 06:47:09,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2020-10-29 06:47:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5529. [2020-10-29 06:47:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5529 states. [2020-10-29 06:47:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 6750 transitions. [2020-10-29 06:47:09,364 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 6750 transitions. Word has length 251 [2020-10-29 06:47:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:09,364 INFO L481 AbstractCegarLoop]: Abstraction has 5529 states and 6750 transitions. [2020-10-29 06:47:09,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 6750 transitions. [2020-10-29 06:47:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 06:47:09,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:09,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:09,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:47:09,372 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:09,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:09,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1346704718, now seen corresponding path program 1 times [2020-10-29 06:47:09,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:09,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963005540] [2020-10-29 06:47:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 06:47:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2303 [2020-10-29 06:47:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:11,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:47:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:47:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:11,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:11,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:11,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:11,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:11,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:47:11,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:11,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:11,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:11,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:11,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:12,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:12,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:47:12,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:12,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 06:47:12,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:12,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:47:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:12,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:47:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:12,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:12,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:12,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 06:47:12,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:12,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:47:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:12,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963005540] [2020-10-29 06:47:12,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:12,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:12,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403117622] [2020-10-29 06:47:12,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:12,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:12,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:12,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:12,729 INFO L87 Difference]: Start difference. First operand 5529 states and 6750 transitions. Second operand 7 states. [2020-10-29 06:47:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:16,660 INFO L93 Difference]: Finished difference Result 12680 states and 15713 transitions. [2020-10-29 06:47:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:47:16,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-29 06:47:16,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:16,700 INFO L225 Difference]: With dead ends: 12680 [2020-10-29 06:47:16,700 INFO L226 Difference]: Without dead ends: 7345 [2020-10-29 06:47:16,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:47:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2020-10-29 06:47:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 6905. [2020-10-29 06:47:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6905 states. [2020-10-29 06:47:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 8332 transitions. [2020-10-29 06:47:16,903 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 8332 transitions. Word has length 267 [2020-10-29 06:47:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:16,904 INFO L481 AbstractCegarLoop]: Abstraction has 6905 states and 8332 transitions. [2020-10-29 06:47:16,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 8332 transitions. [2020-10-29 06:47:16,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-29 06:47:16,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:16,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:16,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:47:16,913 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:16,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:16,913 INFO L82 PathProgramCache]: Analyzing trace with hash -955905958, now seen corresponding path program 1 times [2020-10-29 06:47:16,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:16,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355546235] [2020-10-29 06:47:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:17,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:17,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:17,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:17,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 06:47:17,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-29 06:47:17,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:17,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:47:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 06:47:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:17,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:17,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:17,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:47:17,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:17,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:17,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:17,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:47:17,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 06:47:17,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:17,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:17,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:18,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:47:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:18,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:47:18,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:47:18,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:18,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:47:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-29 06:47:18,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355546235] [2020-10-29 06:47:18,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:18,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:47:18,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909338145] [2020-10-29 06:47:18,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:47:18,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:18,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:47:18,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:47:18,253 INFO L87 Difference]: Start difference. First operand 6905 states and 8332 transitions. Second operand 5 states. [2020-10-29 06:47:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:21,251 INFO L93 Difference]: Finished difference Result 14977 states and 18448 transitions. [2020-10-29 06:47:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:47:21,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-29 06:47:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:21,283 INFO L225 Difference]: With dead ends: 14977 [2020-10-29 06:47:21,283 INFO L226 Difference]: Without dead ends: 8266 [2020-10-29 06:47:21,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:47:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2020-10-29 06:47:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 8233. [2020-10-29 06:47:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8233 states. [2020-10-29 06:47:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8233 states to 8233 states and 9956 transitions. [2020-10-29 06:47:21,509 INFO L78 Accepts]: Start accepts. Automaton has 8233 states and 9956 transitions. Word has length 273 [2020-10-29 06:47:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:21,510 INFO L481 AbstractCegarLoop]: Abstraction has 8233 states and 9956 transitions. [2020-10-29 06:47:21,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:47:21,510 INFO L276 IsEmpty]: Start isEmpty. Operand 8233 states and 9956 transitions. [2020-10-29 06:47:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-29 06:47:21,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:21,523 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:21,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:47:21,524 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash -213329270, now seen corresponding path program 1 times [2020-10-29 06:47:21,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:21,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804318143] [2020-10-29 06:47:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:25,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-29 06:47:25,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:47:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3721 [2020-10-29 06:47:25,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:25,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:47:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:47:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:25,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:25,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:25,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:47:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:25,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:25,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:25,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:25,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:25,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:25,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:47:25,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:25,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:25,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:25,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:25,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:25,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:25,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:47:25,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:25,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 06:47:25,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:25,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:47:25,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:47:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:25,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:25,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 06:47:25,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:25,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:47:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:47:25,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804318143] [2020-10-29 06:47:25,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:25,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:25,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823845066] [2020-10-29 06:47:25,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:25,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:25,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:25,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:25,971 INFO L87 Difference]: Start difference. First operand 8233 states and 9956 transitions. Second operand 7 states. [2020-10-29 06:47:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:29,870 INFO L93 Difference]: Finished difference Result 16725 states and 20489 transitions. [2020-10-29 06:47:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:47:29,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-29 06:47:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:29,905 INFO L225 Difference]: With dead ends: 16725 [2020-10-29 06:47:29,905 INFO L226 Difference]: Without dead ends: 8876 [2020-10-29 06:47:29,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8876 states. [2020-10-29 06:47:30,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8876 to 8639. [2020-10-29 06:47:30,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8639 states. [2020-10-29 06:47:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8639 states to 8639 states and 10261 transitions. [2020-10-29 06:47:30,126 INFO L78 Accepts]: Start accepts. Automaton has 8639 states and 10261 transitions. Word has length 320 [2020-10-29 06:47:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:30,127 INFO L481 AbstractCegarLoop]: Abstraction has 8639 states and 10261 transitions. [2020-10-29 06:47:30,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 8639 states and 10261 transitions. [2020-10-29 06:47:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 06:47:30,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:30,139 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:47:30,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:47:30,139 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:30,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:30,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1731035638, now seen corresponding path program 1 times [2020-10-29 06:47:30,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:30,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838216300] [2020-10-29 06:47:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:30,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:32,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:32,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-29 06:47:32,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:32,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2170 [2020-10-29 06:47:32,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:32,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-29 06:47:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:47:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:32,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:32,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:32,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:47:32,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:32,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:32,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:32,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:32,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:47:32,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:32,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:32,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:32,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:32,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:47:32,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 06:47:32,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:32,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:47:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-29 06:47:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:32,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:32,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:32,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 06:47:32,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:32,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:47:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 06:47:33,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838216300] [2020-10-29 06:47:33,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:33,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:33,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892822036] [2020-10-29 06:47:33,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:33,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:33,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:33,172 INFO L87 Difference]: Start difference. First operand 8639 states and 10261 transitions. Second operand 7 states. [2020-10-29 06:47:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:36,712 INFO L93 Difference]: Finished difference Result 15054 states and 18142 transitions. [2020-10-29 06:47:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:47:36,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-29 06:47:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:36,753 INFO L225 Difference]: With dead ends: 15054 [2020-10-29 06:47:36,754 INFO L226 Difference]: Without dead ends: 9681 [2020-10-29 06:47:36,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9681 states. [2020-10-29 06:47:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9681 to 9229. [2020-10-29 06:47:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9229 states. [2020-10-29 06:47:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9229 states to 9229 states and 10980 transitions. [2020-10-29 06:47:36,999 INFO L78 Accepts]: Start accepts. Automaton has 9229 states and 10980 transitions. Word has length 325 [2020-10-29 06:47:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:36,999 INFO L481 AbstractCegarLoop]: Abstraction has 9229 states and 10980 transitions. [2020-10-29 06:47:37,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 9229 states and 10980 transitions. [2020-10-29 06:47:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 06:47:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:37,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:37,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:47:37,013 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash 689241435, now seen corresponding path program 1 times [2020-10-29 06:47:37,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:37,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773730381] [2020-10-29 06:47:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:38,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:38,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-29 06:47:38,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-29 06:47:38,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:38,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:47:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 06:47:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:38,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:38,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:38,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:47:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:38,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:38,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:38,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:38,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:47:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 06:47:38,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:38,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:47:38,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:47:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:38,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:38,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 06:47:38,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:38,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 06:47:38,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:38,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 06:47:38,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:39,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773730381] [2020-10-29 06:47:39,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:39,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:47:39,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785821661] [2020-10-29 06:47:39,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:47:39,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:39,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:47:39,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:47:39,006 INFO L87 Difference]: Start difference. First operand 9229 states and 10980 transitions. Second operand 8 states. [2020-10-29 06:47:40,000 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 06:47:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:44,989 INFO L93 Difference]: Finished difference Result 20017 states and 24769 transitions. [2020-10-29 06:47:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:47:44,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 328 [2020-10-29 06:47:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:45,037 INFO L225 Difference]: With dead ends: 20017 [2020-10-29 06:47:45,038 INFO L226 Difference]: Without dead ends: 14062 [2020-10-29 06:47:45,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:47:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14062 states. [2020-10-29 06:47:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14062 to 11764. [2020-10-29 06:47:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11764 states. [2020-10-29 06:47:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11764 states to 11764 states and 14036 transitions. [2020-10-29 06:47:45,367 INFO L78 Accepts]: Start accepts. Automaton has 11764 states and 14036 transitions. Word has length 328 [2020-10-29 06:47:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:45,368 INFO L481 AbstractCegarLoop]: Abstraction has 11764 states and 14036 transitions. [2020-10-29 06:47:45,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:47:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 11764 states and 14036 transitions. [2020-10-29 06:47:45,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-29 06:47:45,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:45,384 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:45,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:47:45,384 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:45,385 INFO L82 PathProgramCache]: Analyzing trace with hash -754679054, now seen corresponding path program 1 times [2020-10-29 06:47:45,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:45,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570656965] [2020-10-29 06:47:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:47,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:47,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 06:47:47,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2298 [2020-10-29 06:47:47,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:47,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-29 06:47:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:47:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:48,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:48,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:48,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:47:48,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:48,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:48,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:48,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:48,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:47:48,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:48,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:47:48,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:48,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:48,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:48,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:48,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:48,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:47:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:48,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:48,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:47:48,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:48,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 06:47:48,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:48,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:47:48,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:47:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:48,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:48,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:48,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 06:47:48,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:48,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:47:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 06:47:48,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570656965] [2020-10-29 06:47:48,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:48,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:48,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127130466] [2020-10-29 06:47:48,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:48,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:48,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:48,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:48,591 INFO L87 Difference]: Start difference. First operand 11764 states and 14036 transitions. Second operand 7 states. [2020-10-29 06:47:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:52,441 INFO L93 Difference]: Finished difference Result 20492 states and 24680 transitions. [2020-10-29 06:47:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:47:52,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-29 06:47:52,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:52,478 INFO L225 Difference]: With dead ends: 20492 [2020-10-29 06:47:52,479 INFO L226 Difference]: Without dead ends: 12002 [2020-10-29 06:47:52,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:47:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12002 states. [2020-10-29 06:47:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12002 to 11958. [2020-10-29 06:47:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11958 states. [2020-10-29 06:47:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11958 states to 11958 states and 14267 transitions. [2020-10-29 06:47:52,762 INFO L78 Accepts]: Start accepts. Automaton has 11958 states and 14267 transitions. Word has length 332 [2020-10-29 06:47:52,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:52,763 INFO L481 AbstractCegarLoop]: Abstraction has 11958 states and 14267 transitions. [2020-10-29 06:47:52,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 11958 states and 14267 transitions. [2020-10-29 06:47:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-29 06:47:52,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:52,775 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:52,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:47:52,775 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:52,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:52,776 INFO L82 PathProgramCache]: Analyzing trace with hash -556858969, now seen corresponding path program 1 times [2020-10-29 06:47:52,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:52,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454583087] [2020-10-29 06:47:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:53,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-29 06:47:54,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:54,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-10-29 06:47:54,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:54,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:47:54,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:47:54,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:54,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:47:54,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:47:54,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 06:47:54,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:47:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:47:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:47:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:55,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454583087] [2020-10-29 06:47:55,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:55,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:55,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276016686] [2020-10-29 06:47:55,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:55,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:55,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:55,349 INFO L87 Difference]: Start difference. First operand 11958 states and 14267 transitions. Second operand 7 states. [2020-10-29 06:47:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:59,570 INFO L93 Difference]: Finished difference Result 25822 states and 32203 transitions. [2020-10-29 06:47:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:47:59,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-29 06:47:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:59,620 INFO L225 Difference]: With dead ends: 25822 [2020-10-29 06:47:59,620 INFO L226 Difference]: Without dead ends: 14248 [2020-10-29 06:47:59,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14248 states. [2020-10-29 06:47:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14248 to 14042. [2020-10-29 06:47:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14042 states. [2020-10-29 06:48:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14042 states to 14042 states and 16595 transitions. [2020-10-29 06:48:00,183 INFO L78 Accepts]: Start accepts. Automaton has 14042 states and 16595 transitions. Word has length 336 [2020-10-29 06:48:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:00,183 INFO L481 AbstractCegarLoop]: Abstraction has 14042 states and 16595 transitions. [2020-10-29 06:48:00,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 14042 states and 16595 transitions. [2020-10-29 06:48:00,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-29 06:48:00,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:00,195 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:00,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:48:00,196 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:00,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1889017106, now seen corresponding path program 1 times [2020-10-29 06:48:00,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:00,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266125871] [2020-10-29 06:48:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:02,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2537 [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:48:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:02,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:02,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:02,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:48:02,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:02,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:02,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:02,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:02,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:03,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:03,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:48:03,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:48:03,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:03,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:03,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:48:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:03,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:48:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:48:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:03,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:03,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:03,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:48:03,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:03,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 06:48:03,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:03,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:48:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:48:03,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266125871] [2020-10-29 06:48:03,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:03,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:03,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674411510] [2020-10-29 06:48:03,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:03,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:03,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:03,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:03,450 INFO L87 Difference]: Start difference. First operand 14042 states and 16595 transitions. Second operand 7 states. [2020-10-29 06:48:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:07,554 INFO L93 Difference]: Finished difference Result 25848 states and 30880 transitions. [2020-10-29 06:48:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:07,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-29 06:48:07,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:07,593 INFO L225 Difference]: With dead ends: 25848 [2020-10-29 06:48:07,593 INFO L226 Difference]: Without dead ends: 14686 [2020-10-29 06:48:07,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:48:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2020-10-29 06:48:07,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 14610. [2020-10-29 06:48:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14610 states. [2020-10-29 06:48:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14610 states to 14610 states and 17180 transitions. [2020-10-29 06:48:07,937 INFO L78 Accepts]: Start accepts. Automaton has 14610 states and 17180 transitions. Word has length 347 [2020-10-29 06:48:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:07,938 INFO L481 AbstractCegarLoop]: Abstraction has 14610 states and 17180 transitions. [2020-10-29 06:48:07,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 14610 states and 17180 transitions. [2020-10-29 06:48:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-29 06:48:07,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:07,954 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:07,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:48:07,955 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:07,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:07,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1162416900, now seen corresponding path program 1 times [2020-10-29 06:48:07,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:07,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828240607] [2020-10-29 06:48:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:08,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:09,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 06:48:09,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:10,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:10,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:10,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:10,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:10,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:10,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:48:10,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:10,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:48:10,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:10,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:48:10,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-29 06:48:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:10,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:10,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:48:10,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:10,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:48:10,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:10,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 06:48:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:10,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 217 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 06:48:10,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828240607] [2020-10-29 06:48:10,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:10,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:10,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958782848] [2020-10-29 06:48:10,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:10,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:10,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:10,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:10,626 INFO L87 Difference]: Start difference. First operand 14610 states and 17180 transitions. Second operand 7 states. [2020-10-29 06:48:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:15,906 INFO L93 Difference]: Finished difference Result 30720 states and 36411 transitions. [2020-10-29 06:48:15,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:15,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-29 06:48:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:15,950 INFO L225 Difference]: With dead ends: 30720 [2020-10-29 06:48:15,950 INFO L226 Difference]: Without dead ends: 16494 [2020-10-29 06:48:15,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16494 states. [2020-10-29 06:48:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16494 to 15522. [2020-10-29 06:48:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15522 states. [2020-10-29 06:48:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15522 states to 15522 states and 17936 transitions. [2020-10-29 06:48:16,320 INFO L78 Accepts]: Start accepts. Automaton has 15522 states and 17936 transitions. Word has length 353 [2020-10-29 06:48:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:16,321 INFO L481 AbstractCegarLoop]: Abstraction has 15522 states and 17936 transitions. [2020-10-29 06:48:16,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 15522 states and 17936 transitions. [2020-10-29 06:48:16,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-29 06:48:16,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:16,332 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:16,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:48:16,332 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:16,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:16,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1641410107, now seen corresponding path program 1 times [2020-10-29 06:48:16,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:16,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522268985] [2020-10-29 06:48:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:17,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:48:17,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:17,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:18,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:18,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:18,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:18,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:18,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:18,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:18,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:18,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:18,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:48:18,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:18,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:18,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:18,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:18,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 06:48:18,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:48:18,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:18,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:48:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-29 06:48:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 06:48:18,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 06:48:18,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522268985] [2020-10-29 06:48:18,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:18,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:18,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304665254] [2020-10-29 06:48:18,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:18,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:18,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:18,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:18,518 INFO L87 Difference]: Start difference. First operand 15522 states and 17936 transitions. Second operand 7 states. [2020-10-29 06:48:18,692 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 06:48:21,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:21,986 INFO L93 Difference]: Finished difference Result 25193 states and 29300 transitions. [2020-10-29 06:48:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:48:21,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-29 06:48:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:22,015 INFO L225 Difference]: With dead ends: 25193 [2020-10-29 06:48:22,015 INFO L226 Difference]: Without dead ends: 12935 [2020-10-29 06:48:22,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12935 states. [2020-10-29 06:48:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12935 to 11303. [2020-10-29 06:48:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11303 states. [2020-10-29 06:48:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11303 states to 11303 states and 12770 transitions. [2020-10-29 06:48:22,316 INFO L78 Accepts]: Start accepts. Automaton has 11303 states and 12770 transitions. Word has length 367 [2020-10-29 06:48:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:22,317 INFO L481 AbstractCegarLoop]: Abstraction has 11303 states and 12770 transitions. [2020-10-29 06:48:22,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11303 states and 12770 transitions. [2020-10-29 06:48:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-29 06:48:22,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:22,330 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:22,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:48:22,330 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:22,331 INFO L82 PathProgramCache]: Analyzing trace with hash -473235450, now seen corresponding path program 1 times [2020-10-29 06:48:22,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:22,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34811411] [2020-10-29 06:48:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-29 06:48:23,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-29 06:48:23,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:48:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:48:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 06:48:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:23,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:23,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:48:23,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:48:23,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:48:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:48:23,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:48:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 06:48:23,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 06:48:23,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 06:48:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 252 proven. 39 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-29 06:48:24,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34811411] [2020-10-29 06:48:24,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:24,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:24,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284805224] [2020-10-29 06:48:24,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:24,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:24,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:24,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:24,081 INFO L87 Difference]: Start difference. First operand 11303 states and 12770 transitions. Second operand 7 states. [2020-10-29 06:48:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:27,938 INFO L93 Difference]: Finished difference Result 21657 states and 24859 transitions. [2020-10-29 06:48:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:48:27,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-29 06:48:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:27,968 INFO L225 Difference]: With dead ends: 21657 [2020-10-29 06:48:27,968 INFO L226 Difference]: Without dead ends: 13240 [2020-10-29 06:48:27,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13240 states. [2020-10-29 06:48:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13240 to 12463. [2020-10-29 06:48:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12463 states. [2020-10-29 06:48:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12463 states to 12463 states and 14146 transitions. [2020-10-29 06:48:28,247 INFO L78 Accepts]: Start accepts. Automaton has 12463 states and 14146 transitions. Word has length 383 [2020-10-29 06:48:28,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:28,248 INFO L481 AbstractCegarLoop]: Abstraction has 12463 states and 14146 transitions. [2020-10-29 06:48:28,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 12463 states and 14146 transitions. [2020-10-29 06:48:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-29 06:48:28,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:28,369 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:28,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:48:28,370 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:28,370 INFO L82 PathProgramCache]: Analyzing trace with hash 537907663, now seen corresponding path program 1 times [2020-10-29 06:48:28,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:28,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463126151] [2020-10-29 06:48:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2673 [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 370 [2020-10-29 06:48:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:31,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:31,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:31,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:48:31,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:31,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:31,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:48:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:31,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:48:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:31,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:31,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:31,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:31,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 06:48:31,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:31,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:48:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:31,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:48:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:31,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:31,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 06:48:31,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:31,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 06:48:31,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:31,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:31,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:31,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 06:48:31,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:48:31,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-29 06:48:32,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463126151] [2020-10-29 06:48:32,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:32,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:48:32,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663031972] [2020-10-29 06:48:32,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:48:32,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:32,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:48:32,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:32,062 INFO L87 Difference]: Start difference. First operand 12463 states and 14146 transitions. Second operand 6 states. [2020-10-29 06:48:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:34,440 INFO L93 Difference]: Finished difference Result 21287 states and 24288 transitions. [2020-10-29 06:48:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:34,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 407 [2020-10-29 06:48:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:34,469 INFO L225 Difference]: With dead ends: 21287 [2020-10-29 06:48:34,470 INFO L226 Difference]: Without dead ends: 11900 [2020-10-29 06:48:34,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11900 states. [2020-10-29 06:48:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11900 to 11879. [2020-10-29 06:48:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11879 states. [2020-10-29 06:48:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11879 states to 11879 states and 13452 transitions. [2020-10-29 06:48:34,716 INFO L78 Accepts]: Start accepts. Automaton has 11879 states and 13452 transitions. Word has length 407 [2020-10-29 06:48:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:34,716 INFO L481 AbstractCegarLoop]: Abstraction has 11879 states and 13452 transitions. [2020-10-29 06:48:34,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:48:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 11879 states and 13452 transitions. [2020-10-29 06:48:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-29 06:48:34,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:34,728 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:34,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:48:34,729 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:34,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:34,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1478690019, now seen corresponding path program 1 times [2020-10-29 06:48:34,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:34,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681100732] [2020-10-29 06:48:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:36,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:36,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-29 06:48:36,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-29 06:48:36,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:36,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-29 06:48:36,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:48:36,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:36,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:36,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:36,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:48:36,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:36,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:36,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:36,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:36,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:36,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:36,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:48:36,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:36,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 06:48:36,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:36,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 06:48:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:36,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:48:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 06:48:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 06:48:37,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681100732] [2020-10-29 06:48:37,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:37,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:37,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667986641] [2020-10-29 06:48:37,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:37,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:37,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:37,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:37,304 INFO L87 Difference]: Start difference. First operand 11879 states and 13452 transitions. Second operand 7 states. [2020-10-29 06:48:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:41,362 INFO L93 Difference]: Finished difference Result 23985 states and 27136 transitions. [2020-10-29 06:48:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:41,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-29 06:48:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:41,384 INFO L225 Difference]: With dead ends: 23985 [2020-10-29 06:48:41,385 INFO L226 Difference]: Without dead ends: 12490 [2020-10-29 06:48:41,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:48:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12490 states. [2020-10-29 06:48:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12490 to 12273. [2020-10-29 06:48:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12273 states. [2020-10-29 06:48:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12273 states to 12273 states and 13768 transitions. [2020-10-29 06:48:41,617 INFO L78 Accepts]: Start accepts. Automaton has 12273 states and 13768 transitions. Word has length 414 [2020-10-29 06:48:41,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:41,618 INFO L481 AbstractCegarLoop]: Abstraction has 12273 states and 13768 transitions. [2020-10-29 06:48:41,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 12273 states and 13768 transitions. [2020-10-29 06:48:41,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-29 06:48:41,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:41,636 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:41,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:48:41,636 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1000724622, now seen corresponding path program 1 times [2020-10-29 06:48:41,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:41,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245767875] [2020-10-29 06:48:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:41,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:43,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:43,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-29 06:48:43,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-29 06:48:43,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:43,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-29 06:48:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:48:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:43,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:43,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:43,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:43,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:43,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:43,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:43,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:43,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:43,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:43,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:48:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:43,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:43,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:48:43,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 06:48:43,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:43,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 06:48:43,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-29 06:48:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:43,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:43,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 06:48:43,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:43,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 06:48:43,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:43,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 06:48:43,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-29 06:48:44,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245767875] [2020-10-29 06:48:44,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:44,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:44,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956115831] [2020-10-29 06:48:44,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:44,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:44,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:44,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:44,088 INFO L87 Difference]: Start difference. First operand 12273 states and 13768 transitions. Second operand 7 states. [2020-10-29 06:48:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:47,792 INFO L93 Difference]: Finished difference Result 24365 states and 27614 transitions. [2020-10-29 06:48:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:47,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-29 06:48:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:47,827 INFO L225 Difference]: With dead ends: 24365 [2020-10-29 06:48:47,827 INFO L226 Difference]: Without dead ends: 14398 [2020-10-29 06:48:47,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14398 states. [2020-10-29 06:48:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14398 to 13801. [2020-10-29 06:48:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13801 states. [2020-10-29 06:48:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13801 states to 13801 states and 15603 transitions. [2020-10-29 06:48:48,103 INFO L78 Accepts]: Start accepts. Automaton has 13801 states and 15603 transitions. Word has length 471 [2020-10-29 06:48:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:48,104 INFO L481 AbstractCegarLoop]: Abstraction has 13801 states and 15603 transitions. [2020-10-29 06:48:48,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 13801 states and 15603 transitions. [2020-10-29 06:48:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-29 06:48:48,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:48,130 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 06:48:48,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:48:48,130 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:48,131 INFO L82 PathProgramCache]: Analyzing trace with hash -2115952189, now seen corresponding path program 1 times [2020-10-29 06:48:48,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:48,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631526331] [2020-10-29 06:48:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:53,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:53,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-29 06:48:53,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4849 [2020-10-29 06:48:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:53,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 06:48:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 481 [2020-10-29 06:48:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:53,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:53,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:53,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:53,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:48:53,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:53,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:53,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:53,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:53,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:53,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:53,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:48:53,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 06:48:53,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:53,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:48:53,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:48:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:53,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:48:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:53,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:54,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:48:54,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:54,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 06:48:54,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:54,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:48:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:54,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-29 06:48:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:54,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 06:48:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 453 proven. 24 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-29 06:48:54,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631526331] [2020-10-29 06:48:54,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:54,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:48:54,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572812924] [2020-10-29 06:48:54,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:48:54,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:54,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:48:54,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:48:54,773 INFO L87 Difference]: Start difference. First operand 13801 states and 15603 transitions. Second operand 10 states. [2020-10-29 06:48:54,968 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-29 06:49:01,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:01,519 INFO L93 Difference]: Finished difference Result 25149 states and 28594 transitions. [2020-10-29 06:49:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 06:49:01,520 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 515 [2020-10-29 06:49:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:01,559 INFO L225 Difference]: With dead ends: 25149 [2020-10-29 06:49:01,559 INFO L226 Difference]: Without dead ends: 14420 [2020-10-29 06:49:01,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-29 06:49:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14420 states. [2020-10-29 06:49:01,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14420 to 14203. [2020-10-29 06:49:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14203 states. [2020-10-29 06:49:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14203 states to 14203 states and 16040 transitions. [2020-10-29 06:49:01,805 INFO L78 Accepts]: Start accepts. Automaton has 14203 states and 16040 transitions. Word has length 515 [2020-10-29 06:49:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:01,806 INFO L481 AbstractCegarLoop]: Abstraction has 14203 states and 16040 transitions. [2020-10-29 06:49:01,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:49:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 14203 states and 16040 transitions. [2020-10-29 06:49:01,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-29 06:49:01,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:01,825 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:49:01,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:49:01,825 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:01,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:01,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2054421555, now seen corresponding path program 1 times [2020-10-29 06:49:01,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:01,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687240691] [2020-10-29 06:49:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:02,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:04,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:06,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:06,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-29 06:49:06,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:06,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 06:49:06,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:06,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:49:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:49:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-29 06:49:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:07,177 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:49:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:07,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:07,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:49:07,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:07,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:49:07,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:07,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:07,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:49:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 06:49:07,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:07,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:49:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:49:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:07,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:49:07,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 06:49:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:07,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:49:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:49:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:49:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 06:49:08,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-29 06:49:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:08,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 06:49:08,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 06:49:08,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-29 06:49:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:08,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 367 proven. 338 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 06:49:08,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687240691] [2020-10-29 06:49:08,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:08,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:49:08,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798951904] [2020-10-29 06:49:08,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:49:08,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:08,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:49:08,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:49:08,469 INFO L87 Difference]: Start difference. First operand 14203 states and 16040 transitions. Second operand 10 states. [2020-10-29 06:49:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:17,278 INFO L93 Difference]: Finished difference Result 34293 states and 39375 transitions. [2020-10-29 06:49:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:49:17,280 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 532 [2020-10-29 06:49:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:17,324 INFO L225 Difference]: With dead ends: 34293 [2020-10-29 06:49:17,324 INFO L226 Difference]: Without dead ends: 22398 [2020-10-29 06:49:17,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-29 06:49:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22398 states. [2020-10-29 06:49:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22398 to 21283. [2020-10-29 06:49:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21283 states. [2020-10-29 06:49:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21283 states to 21283 states and 23895 transitions. [2020-10-29 06:49:17,759 INFO L78 Accepts]: Start accepts. Automaton has 21283 states and 23895 transitions. Word has length 532 [2020-10-29 06:49:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:17,759 INFO L481 AbstractCegarLoop]: Abstraction has 21283 states and 23895 transitions. [2020-10-29 06:49:17,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:49:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 21283 states and 23895 transitions. [2020-10-29 06:49:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-29 06:49:17,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:17,774 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 06:49:17,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:49:17,774 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:17,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1636979721, now seen corresponding path program 1 times [2020-10-29 06:49:17,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:17,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699747859] [2020-10-29 06:49:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:19,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:19,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-29 06:49:19,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-10-29 06:49:19,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:19,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 441 [2020-10-29 06:49:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:49:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:19,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:19,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:19,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:19,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:19,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:19,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:19,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:19,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:19,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:19,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:49:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 06:49:19,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:19,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:19,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:49:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:19,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:19,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 06:49:19,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-29 06:49:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:19,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:19,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 06:49:19,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 06:49:19,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:19,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 06:49:19,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 450 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-29 06:49:20,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699747859] [2020-10-29 06:49:20,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:20,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:20,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402681376] [2020-10-29 06:49:20,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:20,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:20,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:20,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:20,193 INFO L87 Difference]: Start difference. First operand 21283 states and 23895 transitions. Second operand 7 states. [2020-10-29 06:49:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:24,541 INFO L93 Difference]: Finished difference Result 42184 states and 47467 transitions. [2020-10-29 06:49:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:24,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 573 [2020-10-29 06:49:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:24,582 INFO L225 Difference]: With dead ends: 42184 [2020-10-29 06:49:24,582 INFO L226 Difference]: Without dead ends: 24369 [2020-10-29 06:49:24,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:24,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24369 states. [2020-10-29 06:49:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24369 to 22235. [2020-10-29 06:49:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22235 states. [2020-10-29 06:49:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22235 states to 22235 states and 24968 transitions. [2020-10-29 06:49:25,202 INFO L78 Accepts]: Start accepts. Automaton has 22235 states and 24968 transitions. Word has length 573 [2020-10-29 06:49:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:25,203 INFO L481 AbstractCegarLoop]: Abstraction has 22235 states and 24968 transitions. [2020-10-29 06:49:25,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22235 states and 24968 transitions. [2020-10-29 06:49:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2020-10-29 06:49:25,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:25,232 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2020-10-29 06:49:25,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 06:49:25,232 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:25,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1645270907, now seen corresponding path program 1 times [2020-10-29 06:49:25,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:25,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621959099] [2020-10-29 06:49:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:30,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 629 [2020-10-29 06:49:30,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 06:49:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4826 [2020-10-29 06:49:30,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:30,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-29 06:49:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 06:49:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:30,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:30,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:49:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:30,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:30,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:30,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:30,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:30,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:49:30,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:30,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:30,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:30,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:30,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:30,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:49:30,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:30,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 06:49:30,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:30,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 06:49:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:30,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:49:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:30,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 06:49:30,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:30,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 06:49:30,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:30,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:30,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:30,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:30,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 06:49:30,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:31,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-29 06:49:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:31,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:31,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 06:49:31,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 06:49:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:31,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-29 06:49:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 06:49:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 175 proven. 4 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2020-10-29 06:49:31,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621959099] [2020-10-29 06:49:31,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:31,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:49:31,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700589938] [2020-10-29 06:49:31,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:49:31,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:31,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:49:31,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:49:31,271 INFO L87 Difference]: Start difference. First operand 22235 states and 24968 transitions. Second operand 6 states. [2020-10-29 06:49:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:33,956 INFO L93 Difference]: Finished difference Result 41041 states and 46247 transitions. [2020-10-29 06:49:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:49:33,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 611 [2020-10-29 06:49:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:33,993 INFO L225 Difference]: With dead ends: 41041 [2020-10-29 06:49:33,993 INFO L226 Difference]: Without dead ends: 22274 [2020-10-29 06:49:34,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22274 states. [2020-10-29 06:49:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22274 to 22234. [2020-10-29 06:49:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22234 states. [2020-10-29 06:49:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22234 states to 22234 states and 24963 transitions. [2020-10-29 06:49:34,321 INFO L78 Accepts]: Start accepts. Automaton has 22234 states and 24963 transitions. Word has length 611 [2020-10-29 06:49:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:34,322 INFO L481 AbstractCegarLoop]: Abstraction has 22234 states and 24963 transitions. [2020-10-29 06:49:34,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:49:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 22234 states and 24963 transitions. [2020-10-29 06:49:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-29 06:49:34,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:34,344 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:49:34,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 06:49:34,344 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash 529392585, now seen corresponding path program 1 times [2020-10-29 06:49:34,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:34,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367337111] [2020-10-29 06:49:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:34,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 645 [2020-10-29 06:49:36,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-10-29 06:49:36,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 495 [2020-10-29 06:49:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:49:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:36,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:36,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:36,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:36,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:49:36,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:36,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:49:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 06:49:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-10-29 06:49:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 06:49:36,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:49:36,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 06:49:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 450 proven. 2 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2020-10-29 06:49:36,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367337111] [2020-10-29 06:49:36,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:36,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:36,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046745785] [2020-10-29 06:49:36,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:36,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:36,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:36,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:36,962 INFO L87 Difference]: Start difference. First operand 22234 states and 24963 transitions. Second operand 7 states. [2020-10-29 06:49:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:40,778 INFO L93 Difference]: Finished difference Result 41044 states and 46223 transitions. [2020-10-29 06:49:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:40,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 627 [2020-10-29 06:49:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:40,818 INFO L225 Difference]: With dead ends: 41044 [2020-10-29 06:49:40,818 INFO L226 Difference]: Without dead ends: 22278 [2020-10-29 06:49:40,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22278 states. [2020-10-29 06:49:41,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22278 to 22234. [2020-10-29 06:49:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22234 states. [2020-10-29 06:49:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22234 states to 22234 states and 24951 transitions. [2020-10-29 06:49:41,260 INFO L78 Accepts]: Start accepts. Automaton has 22234 states and 24951 transitions. Word has length 627 [2020-10-29 06:49:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:41,261 INFO L481 AbstractCegarLoop]: Abstraction has 22234 states and 24951 transitions. [2020-10-29 06:49:41,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 22234 states and 24951 transitions. [2020-10-29 06:49:41,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2020-10-29 06:49:41,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:41,290 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:41,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 06:49:41,290 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1734870966, now seen corresponding path program 1 times [2020-10-29 06:49:41,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:41,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129345239] [2020-10-29 06:49:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:42,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking...