/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=SHALLOWEST --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/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:04:05,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:04:05,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:04:05,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:04:05,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:04:05,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:04:05,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:04:05,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:04:05,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:04:05,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:04:05,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:04:05,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:04:05,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:04:05,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:04:05,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:04:05,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:04:05,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:04:05,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:04:05,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:04:05,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:04:05,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:04:05,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:04:05,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:04:05,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:04:05,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:04:05,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:04:05,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:04:05,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:04:05,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:04:05,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:04:05,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:04:05,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:04:05,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:04:05,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:04:05,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:04:05,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:04:05,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:04:05,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:04:05,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:04:05,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:04:05,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:04:05,553 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 [2020-10-27 06:04:05,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:04:05,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:04:05,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:04:05,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:04:05,623 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:04:05,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:04:05,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:04:05,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:04:05,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:04:05,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:04:05,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:04:05,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:04:05,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:04:05,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:04:05,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:04:05,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:04:05,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:04:05,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:04:05,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:04:05,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:04:05,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:04:05,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:04:05,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:04:05,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:04:05,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:04:05,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:04:05,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:04:05,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:04:05,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:04:05,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:04:06,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:04:06,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:04:06,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:04:06,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:04:06,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:04:06,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:04:06,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6cd3bb7c/7d60e3c08a924af78bf6ad04189ece46/FLAG9442a83d5 [2020-10-27 06:04:07,032 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:04:07,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:04:07,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6cd3bb7c/7d60e3c08a924af78bf6ad04189ece46/FLAG9442a83d5 [2020-10-27 06:04:07,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6cd3bb7c/7d60e3c08a924af78bf6ad04189ece46 [2020-10-27 06:04:07,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:04:07,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:04:07,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:04:07,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:04:07,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:04:07,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:04:07" (1/1) ... [2020-10-27 06:04:07,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7946c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:07, skipping insertion in model container [2020-10-27 06:04:07,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:04:07" (1/1) ... [2020-10-27 06:04:07,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:04:07,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:04:08,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:04:08,949 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:04:09,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:04:09,815 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:04:09,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09 WrapperNode [2020-10-27 06:04:09,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:04:09,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:04:09,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:04:09,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:04:09,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (1/1) ... [2020-10-27 06:04:09,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (1/1) ... [2020-10-27 06:04:09,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (1/1) ... [2020-10-27 06:04:09,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (1/1) ... [2020-10-27 06:04:10,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (1/1) ... [2020-10-27 06:04:10,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (1/1) ... [2020-10-27 06:04:10,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (1/1) ... [2020-10-27 06:04:10,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:04:10,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:04:10,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:04:10,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:04:10,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (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 [2020-10-27 06:04:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:04:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:04:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:04:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:04:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:04:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:04:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:04:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:04:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:04:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:04:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:04:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:04:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:04:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:04:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:04:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:04:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:04:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:04:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:04:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:04:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:04:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:04:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:04:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:04:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:04:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:04:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:04:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:04:14,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:04:14,639 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:04:14,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:04:14 BoogieIcfgContainer [2020-10-27 06:04:14,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:04:14,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:04:14,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:04:14,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:04:14,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:04:07" (1/3) ... [2020-10-27 06:04:14,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7f37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:04:14, skipping insertion in model container [2020-10-27 06:04:14,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:09" (2/3) ... [2020-10-27 06:04:14,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7f37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:04:14, skipping insertion in model container [2020-10-27 06:04:14,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:04:14" (3/3) ... [2020-10-27 06:04:14,653 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:04:14,665 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:04:14,675 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:04:14,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:04:14,735 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:04:14,735 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:04:14,735 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:04:14,736 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:04:14,736 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:04:14,736 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:04:14,736 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:04:14,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:04:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states. [2020-10-27 06:04:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 06:04:14,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:04:14,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:04:14,827 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:04:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:04:14,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1005847595, now seen corresponding path program 1 times [2020-10-27 06:04:14,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:04:14,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486701132] [2020-10-27 06:04:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:04:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:16,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:18,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:19,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:20,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:20,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 06:04:20,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:04:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5174 [2020-10-27 06:04:20,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:04:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:04:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:04:20,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:04:22,842 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:04:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:04:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:22,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:22,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:04:22,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:04:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 06:04:22,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:04:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:04:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:04:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:04:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:04:23,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486701132] [2020-10-27 06:04:23,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:04:23,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:04:23,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472115125] [2020-10-27 06:04:23,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:04:23,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:04:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:04:23,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:04:23,273 INFO L87 Difference]: Start difference. First operand 996 states. Second operand 5 states. [2020-10-27 06:04:38,336 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:04:42,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:04:42,085 INFO L93 Difference]: Finished difference Result 2858 states and 5160 transitions. [2020-10-27 06:04:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:04:42,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-27 06:04:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:04:42,123 INFO L225 Difference]: With dead ends: 2858 [2020-10-27 06:04:42,123 INFO L226 Difference]: Without dead ends: 1897 [2020-10-27 06:04:42,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:04:42,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2020-10-27 06:04:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1811. [2020-10-27 06:04:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-10-27 06:04:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2789 transitions. [2020-10-27 06:04:42,359 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2789 transitions. Word has length 319 [2020-10-27 06:04:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:04:42,363 INFO L481 AbstractCegarLoop]: Abstraction has 1811 states and 2789 transitions. [2020-10-27 06:04:42,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:04:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2789 transitions. [2020-10-27 06:04:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 06:04:42,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:04:42,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:04:42,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:04:42,377 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:04:42,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:04:42,382 INFO L82 PathProgramCache]: Analyzing trace with hash 336722546, now seen corresponding path program 1 times [2020-10-27 06:04:42,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:04:42,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545922057] [2020-10-27 06:04:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:04:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:42,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:44,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:45,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:47,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:47,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 06:04:47,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:04:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 06:04:47,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:04:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:04:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 06:04:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:04:49,599 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:04:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:04:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:49,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:49,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:04:49,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:04:49,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 06:04:49,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:04:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:04:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:04:49,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:04:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:04:49,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545922057] [2020-10-27 06:04:49,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:04:49,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:04:49,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37458185] [2020-10-27 06:04:49,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:04:49,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:04:49,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:04:49,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:04:49,990 INFO L87 Difference]: Start difference. First operand 1811 states and 2789 transitions. Second operand 5 states. [2020-10-27 06:05:03,161 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:05:06,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:06,628 INFO L93 Difference]: Finished difference Result 5288 states and 8118 transitions. [2020-10-27 06:05:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:06,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 06:05:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:06,653 INFO L225 Difference]: With dead ends: 5288 [2020-10-27 06:05:06,653 INFO L226 Difference]: Without dead ends: 3549 [2020-10-27 06:05:06,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2020-10-27 06:05:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3463. [2020-10-27 06:05:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3463 states. [2020-10-27 06:05:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 5304 transitions. [2020-10-27 06:05:06,832 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 5304 transitions. Word has length 321 [2020-10-27 06:05:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:06,834 INFO L481 AbstractCegarLoop]: Abstraction has 3463 states and 5304 transitions. [2020-10-27 06:05:06,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:06,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 5304 transitions. [2020-10-27 06:05:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 06:05:06,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:06,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:05:06,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:05:06,847 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:06,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:06,851 INFO L82 PathProgramCache]: Analyzing trace with hash 473102939, now seen corresponding path program 1 times [2020-10-27 06:05:06,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:06,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033915153] [2020-10-27 06:05:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:07,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:08,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:08,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:11,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:11,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:11,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 06:05:11,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:05:11,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 06:05:11,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:11,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 06:05:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:05:13,915 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:05:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:13,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:13,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:13,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:13,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:05:13,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:13,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:05:14,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033915153] [2020-10-27 06:05:14,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:14,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:14,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779180564] [2020-10-27 06:05:14,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:14,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:14,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:14,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:14,211 INFO L87 Difference]: Start difference. First operand 3463 states and 5304 transitions. Second operand 5 states. [2020-10-27 06:05:26,665 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:05:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:29,907 INFO L93 Difference]: Finished difference Result 10166 states and 15528 transitions. [2020-10-27 06:05:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:29,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-27 06:05:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:29,944 INFO L225 Difference]: With dead ends: 10166 [2020-10-27 06:05:29,945 INFO L226 Difference]: Without dead ends: 6750 [2020-10-27 06:05:29,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6750 states. [2020-10-27 06:05:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6750 to 6669. [2020-10-27 06:05:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6669 states. [2020-10-27 06:05:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 10132 transitions. [2020-10-27 06:05:30,288 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 10132 transitions. Word has length 323 [2020-10-27 06:05:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:30,290 INFO L481 AbstractCegarLoop]: Abstraction has 6669 states and 10132 transitions. [2020-10-27 06:05:30,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 10132 transitions. [2020-10-27 06:05:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 06:05:30,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:30,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:05:30,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:05:30,307 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:30,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:30,308 INFO L82 PathProgramCache]: Analyzing trace with hash 930079794, now seen corresponding path program 1 times [2020-10-27 06:05:30,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:30,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063633570] [2020-10-27 06:05:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:31,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:32,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:35,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:35,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 06:05:35,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:05:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 06:05:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 06:05:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:37,446 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:05:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:37,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:37,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:37,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:05:37,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:37,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:05:37,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063633570] [2020-10-27 06:05:37,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:37,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:37,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067413255] [2020-10-27 06:05:37,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:37,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:37,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:37,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:37,722 INFO L87 Difference]: Start difference. First operand 6669 states and 10132 transitions. Second operand 5 states. [2020-10-27 06:05:49,843 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:05:53,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:53,442 INFO L93 Difference]: Finished difference Result 19527 states and 29590 transitions. [2020-10-27 06:05:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:53,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-27 06:05:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:53,511 INFO L225 Difference]: With dead ends: 19527 [2020-10-27 06:05:53,512 INFO L226 Difference]: Without dead ends: 13019 [2020-10-27 06:05:53,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13019 states. [2020-10-27 06:05:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13019 to 12929. [2020-10-27 06:05:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12929 states. [2020-10-27 06:05:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12929 states to 12929 states and 19492 transitions. [2020-10-27 06:05:54,273 INFO L78 Accepts]: Start accepts. Automaton has 12929 states and 19492 transitions. Word has length 325 [2020-10-27 06:05:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:54,273 INFO L481 AbstractCegarLoop]: Abstraction has 12929 states and 19492 transitions. [2020-10-27 06:05:54,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12929 states and 19492 transitions. [2020-10-27 06:05:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 06:05:54,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:54,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:05:54,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:05:54,302 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:54,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:54,303 INFO L82 PathProgramCache]: Analyzing trace with hash -336897870, now seen corresponding path program 1 times [2020-10-27 06:05:54,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:54,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278151936] [2020-10-27 06:05:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:54,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:55,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:55,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:59,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:59,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 06:05:59,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:05:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 06:05:59,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 06:05:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:01,251 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:06:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:01,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:01,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:01,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:01,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:06:01,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:06:01,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278151936] [2020-10-27 06:06:01,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:01,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:01,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963640612] [2020-10-27 06:06:01,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:01,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:01,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:01,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:01,543 INFO L87 Difference]: Start difference. First operand 12929 states and 19492 transitions. Second operand 5 states. [2020-10-27 06:06:14,342 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:06:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:17,841 INFO L93 Difference]: Finished difference Result 38134 states and 57352 transitions. [2020-10-27 06:06:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:17,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-27 06:06:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:17,901 INFO L225 Difference]: With dead ends: 38134 [2020-10-27 06:06:17,901 INFO L226 Difference]: Without dead ends: 25315 [2020-10-27 06:06:17,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25315 states. [2020-10-27 06:06:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25315 to 25259. [2020-10-27 06:06:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25259 states. [2020-10-27 06:06:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25259 states to 25259 states and 37742 transitions. [2020-10-27 06:06:19,001 INFO L78 Accepts]: Start accepts. Automaton has 25259 states and 37742 transitions. Word has length 327 [2020-10-27 06:06:19,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:19,002 INFO L481 AbstractCegarLoop]: Abstraction has 25259 states and 37742 transitions. [2020-10-27 06:06:19,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 25259 states and 37742 transitions. [2020-10-27 06:06:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 06:06:19,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:19,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:06:19,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:06:19,059 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:19,059 INFO L82 PathProgramCache]: Analyzing trace with hash -201773615, now seen corresponding path program 1 times [2020-10-27 06:06:19,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:19,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072697251] [2020-10-27 06:06:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:24,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:24,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 06:06:24,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:06:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 06:06:24,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:06:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:26,085 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:06:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:26,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:26,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:26,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:06:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:06:26,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072697251] [2020-10-27 06:06:26,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:26,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:26,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568132023] [2020-10-27 06:06:26,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:26,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:26,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:26,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:26,291 INFO L87 Difference]: Start difference. First operand 25259 states and 37742 transitions. Second operand 5 states. [2020-10-27 06:06:40,752 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:06:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:44,782 INFO L93 Difference]: Finished difference Result 74114 states and 110479 transitions. [2020-10-27 06:06:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:44,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-27 06:06:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:44,888 INFO L225 Difference]: With dead ends: 74114 [2020-10-27 06:06:44,889 INFO L226 Difference]: Without dead ends: 49391 [2020-10-27 06:06:44,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49391 states. [2020-10-27 06:06:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49391 to 49323. [2020-10-27 06:06:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49323 states. [2020-10-27 06:06:47,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49323 states to 49323 states and 73061 transitions. [2020-10-27 06:06:47,297 INFO L78 Accepts]: Start accepts. Automaton has 49323 states and 73061 transitions. Word has length 329 [2020-10-27 06:06:47,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:47,297 INFO L481 AbstractCegarLoop]: Abstraction has 49323 states and 73061 transitions. [2020-10-27 06:06:47,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:47,297 INFO L276 IsEmpty]: Start isEmpty. Operand 49323 states and 73061 transitions. [2020-10-27 06:06:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-27 06:06:47,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:47,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:06:47,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:06:47,369 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:47,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1095161475, now seen corresponding path program 1 times [2020-10-27 06:06:47,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:47,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467113004] [2020-10-27 06:06:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:47,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:47,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:52,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:52,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 06:06:52,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:06:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 06:06:52,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:06:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:54,719 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:06:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:54,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:54,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:54,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:54,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:06:54,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:06:54,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467113004] [2020-10-27 06:06:54,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:54,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:54,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692935256] [2020-10-27 06:06:54,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:54,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:54,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:54,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:54,930 INFO L87 Difference]: Start difference. First operand 49323 states and 73061 transitions. Second operand 5 states. [2020-10-27 06:07:11,994 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:07:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:17,091 INFO L93 Difference]: Finished difference Result 144900 states and 214191 transitions. [2020-10-27 06:07:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:17,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-27 06:07:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:17,266 INFO L225 Difference]: With dead ends: 144900 [2020-10-27 06:07:17,266 INFO L226 Difference]: Without dead ends: 96880 [2020-10-27 06:07:17,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96880 states. [2020-10-27 06:07:22,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96880 to 96716. [2020-10-27 06:07:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96716 states. [2020-10-27 06:07:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96716 states to 96716 states and 142197 transitions. [2020-10-27 06:07:22,928 INFO L78 Accepts]: Start accepts. Automaton has 96716 states and 142197 transitions. Word has length 331 [2020-10-27 06:07:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:22,928 INFO L481 AbstractCegarLoop]: Abstraction has 96716 states and 142197 transitions. [2020-10-27 06:07:22,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 96716 states and 142197 transitions. [2020-10-27 06:07:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-27 06:07:23,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:23,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:23,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:07:23,022 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1304547896, now seen corresponding path program 1 times [2020-10-27 06:07:23,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:23,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144728605] [2020-10-27 06:07:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:28,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:28,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 06:07:28,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:07:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 06:07:28,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 06:07:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:30,179 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:07:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:07:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:07:30,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144728605] [2020-10-27 06:07:30,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:30,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:30,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078908784] [2020-10-27 06:07:30,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:30,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:30,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:30,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:30,393 INFO L87 Difference]: Start difference. First operand 96716 states and 142197 transitions. Second operand 5 states.