/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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:59:05,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:59:05,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:59:05,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:59:05,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:59:05,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:59:05,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:59:05,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:59:05,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:59:05,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:59:05,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:59:05,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:59:05,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:59:05,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:59:05,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:59:05,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:59:05,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:59:05,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:59:05,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:59:05,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:59:05,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:59:05,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:59:05,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:59:05,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:59:05,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:59:05,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:59:05,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:59:05,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:59:05,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:59:05,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:59:05,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:59:05,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:59:05,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:59:05,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:59:05,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:59:05,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:59:05,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:59:05,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:59:05,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:59:05,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:59:05,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:59:05,536 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 04:59:05,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:59:05,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:59:05,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:59:05,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:59:05,593 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:59:05,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:59:05,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:59:05,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:59:05,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:59:05,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:59:05,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:59:05,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:59:05,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:59:05,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:59:05,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:59:05,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:59:05,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:59:05,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:59:05,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:59:05,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:59:05,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:59:05,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:59:05,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:59:05,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:59:05,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:59:05,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:59:05,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:59:05,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:59:05,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:59:05,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:59:06,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:59:06,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:59:06,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:59:06,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:59:06,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:59:06,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:59:06,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b6e75b34/a15da6e0b2e94e2a878245870b4009d8/FLAG7ed8fec50 [2020-10-27 04:59:07,046 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:59:07,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:59:07,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b6e75b34/a15da6e0b2e94e2a878245870b4009d8/FLAG7ed8fec50 [2020-10-27 04:59:07,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b6e75b34/a15da6e0b2e94e2a878245870b4009d8 [2020-10-27 04:59:07,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:59:07,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:59:07,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:59:07,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:59:07,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:59:07,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:59:07" (1/1) ... [2020-10-27 04:59:07,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b6a50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:07, skipping insertion in model container [2020-10-27 04:59:07,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:59:07" (1/1) ... [2020-10-27 04:59:07,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:59:07,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:59:08,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:59:08,955 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:59:09,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:59:09,718 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:59:09,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09 WrapperNode [2020-10-27 04:59:09,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:59:09,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:59:09,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:59:09,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:59:09,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (1/1) ... [2020-10-27 04:59:09,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (1/1) ... [2020-10-27 04:59:09,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (1/1) ... [2020-10-27 04:59:09,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (1/1) ... [2020-10-27 04:59:09,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (1/1) ... [2020-10-27 04:59:09,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (1/1) ... [2020-10-27 04:59:09,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (1/1) ... [2020-10-27 04:59:09,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:59:09,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:59:09,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:59:09,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:59:09,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (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 04:59:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:59:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:59:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:59:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:59:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:59:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:59:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:59:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:59:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:59:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:59:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:59:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:59:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:59:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:59:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:59:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:59:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:59:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:59:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:59:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:59:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:59:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:59:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:59:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:59:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:59:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:59:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:59:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:59:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:59:13,125 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:59:13,125 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:59:13,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:59:13 BoogieIcfgContainer [2020-10-27 04:59:13,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:59:13,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:59:13,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:59:13,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:59:13,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:59:07" (1/3) ... [2020-10-27 04:59:13,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56470f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:59:13, skipping insertion in model container [2020-10-27 04:59:13,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:09" (2/3) ... [2020-10-27 04:59:13,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56470f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:59:13, skipping insertion in model container [2020-10-27 04:59:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:59:13" (3/3) ... [2020-10-27 04:59:13,138 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:59:13,150 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:59:13,157 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:59:13,171 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:59:13,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:59:13,205 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:59:13,205 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:59:13,205 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:59:13,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:59:13,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:59:13,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:59:13,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:59:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states. [2020-10-27 04:59:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-27 04:59:13,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:13,273 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] [2020-10-27 04:59:13,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:13,281 INFO L82 PathProgramCache]: Analyzing trace with hash 936242203, now seen corresponding path program 1 times [2020-10-27 04:59:13,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:13,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472444942] [2020-10-27 04:59:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:15,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:16,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:17,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:17,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:18,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:18,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-27 04:59:18,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 04:59:18,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-27 04:59:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-27 04:59:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 04:59:20,108 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 04:59:20,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:20,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:20,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:20,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:20,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:59:20,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:20,466 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 04:59:20,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472444942] [2020-10-27 04:59:20,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:20,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:20,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311448853] [2020-10-27 04:59:20,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:20,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:20,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:20,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:20,501 INFO L87 Difference]: Start difference. First operand 926 states. Second operand 5 states. [2020-10-27 04:59:31,898 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:59:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:34,836 INFO L93 Difference]: Finished difference Result 2701 states and 4916 transitions. [2020-10-27 04:59:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:59:34,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-27 04:59:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:34,877 INFO L225 Difference]: With dead ends: 2701 [2020-10-27 04:59:34,877 INFO L226 Difference]: Without dead ends: 1782 [2020-10-27 04:59:34,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-10-27 04:59:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1696. [2020-10-27 04:59:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2020-10-27 04:59:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2607 transitions. [2020-10-27 04:59:35,139 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2607 transitions. Word has length 297 [2020-10-27 04:59:35,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:35,143 INFO L481 AbstractCegarLoop]: Abstraction has 1696 states and 2607 transitions. [2020-10-27 04:59:35,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:35,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2607 transitions. [2020-10-27 04:59:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-27 04:59:35,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:35,167 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] [2020-10-27 04:59:35,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:59:35,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:35,172 INFO L82 PathProgramCache]: Analyzing trace with hash 612695513, now seen corresponding path program 1 times [2020-10-27 04:59:35,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:35,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856729369] [2020-10-27 04:59:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:35,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:36,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:40,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:40,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-27 04:59:40,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 04:59:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 04:59:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 04:59:40,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:41,469 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 04:59:41,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:41,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:41,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:41,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 04:59:41,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:41,733 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 04:59:41,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856729369] [2020-10-27 04:59:41,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:41,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:41,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487986722] [2020-10-27 04:59:41,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:41,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:41,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:41,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:41,743 INFO L87 Difference]: Start difference. First operand 1696 states and 2607 transitions. Second operand 5 states. [2020-10-27 04:59:51,019 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:59:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:53,753 INFO L93 Difference]: Finished difference Result 4916 states and 7528 transitions. [2020-10-27 04:59:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:53,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-27 04:59:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:53,774 INFO L225 Difference]: With dead ends: 4916 [2020-10-27 04:59:53,774 INFO L226 Difference]: Without dead ends: 3293 [2020-10-27 04:59:53,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2020-10-27 04:59:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3207. [2020-10-27 04:59:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2020-10-27 04:59:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 4899 transitions. [2020-10-27 04:59:53,939 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 4899 transitions. Word has length 299 [2020-10-27 04:59:53,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:53,940 INFO L481 AbstractCegarLoop]: Abstraction has 3207 states and 4899 transitions. [2020-10-27 04:59:53,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 4899 transitions. [2020-10-27 04:59:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-27 04:59:53,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:53,950 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] [2020-10-27 04:59:53,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:59:53,951 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:53,952 INFO L82 PathProgramCache]: Analyzing trace with hash -463185943, now seen corresponding path program 1 times [2020-10-27 04:59:53,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:53,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846930199] [2020-10-27 04:59:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:54,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:55,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:55,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:55,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:59,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:59,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-27 04:59:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 04:59:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 04:59:59,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 04:59:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:00,080 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:00:00,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:00,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:00,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:00,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:00,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:00:00,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:00,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:00,308 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 05:00:00,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846930199] [2020-10-27 05:00:00,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:00,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:00,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768366322] [2020-10-27 05:00:00,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:00,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:00,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:00,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:00,311 INFO L87 Difference]: Start difference. First operand 3207 states and 4899 transitions. Second operand 5 states. [2020-10-27 05:00:10,640 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:00:13,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:13,377 INFO L93 Difference]: Finished difference Result 9420 states and 14357 transitions. [2020-10-27 05:00:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:13,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-10-27 05:00:13,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:13,412 INFO L225 Difference]: With dead ends: 9420 [2020-10-27 05:00:13,413 INFO L226 Difference]: Without dead ends: 6298 [2020-10-27 05:00:13,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6298 states. [2020-10-27 05:00:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6298 to 6238. [2020-10-27 05:00:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6238 states. [2020-10-27 05:00:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 9465 transitions. [2020-10-27 05:00:13,790 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 9465 transitions. Word has length 301 [2020-10-27 05:00:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:13,791 INFO L481 AbstractCegarLoop]: Abstraction has 6238 states and 9465 transitions. [2020-10-27 05:00:13,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 9465 transitions. [2020-10-27 05:00:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 05:00:13,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:13,806 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] [2020-10-27 05:00:13,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:00:13,807 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:13,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:13,807 INFO L82 PathProgramCache]: Analyzing trace with hash 56321736, now seen corresponding path program 1 times [2020-10-27 05:00:13,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:13,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830510745] [2020-10-27 05:00:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:18,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-27 05:00:18,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:00:18,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 05:00:18,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 05:00:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:19,934 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:00:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:19,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:00:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:20,189 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 05:00:20,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830510745] [2020-10-27 05:00:20,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:20,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:20,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938645389] [2020-10-27 05:00:20,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:20,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:20,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:20,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:20,193 INFO L87 Difference]: Start difference. First operand 6238 states and 9465 transitions. Second operand 5 states. [2020-10-27 05:00:30,547 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:00:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:33,303 INFO L93 Difference]: Finished difference Result 18246 states and 27611 transitions. [2020-10-27 05:00:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:33,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-27 05:00:33,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:33,362 INFO L225 Difference]: With dead ends: 18246 [2020-10-27 05:00:33,363 INFO L226 Difference]: Without dead ends: 12214 [2020-10-27 05:00:33,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12214 states. [2020-10-27 05:00:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12214 to 12106. [2020-10-27 05:00:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12106 states. [2020-10-27 05:00:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12106 states to 12106 states and 18257 transitions. [2020-10-27 05:00:34,236 INFO L78 Accepts]: Start accepts. Automaton has 12106 states and 18257 transitions. Word has length 303 [2020-10-27 05:00:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:34,237 INFO L481 AbstractCegarLoop]: Abstraction has 12106 states and 18257 transitions. [2020-10-27 05:00:34,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 12106 states and 18257 transitions. [2020-10-27 05:00:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 05:00:34,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:34,264 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] [2020-10-27 05:00:34,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:00:34,264 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:34,265 INFO L82 PathProgramCache]: Analyzing trace with hash 344133093, now seen corresponding path program 1 times [2020-10-27 05:00:34,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:34,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553438096] [2020-10-27 05:00:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:35,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:35,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:36,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:39,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 05:00:39,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:00:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 05:00:39,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 05:00:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:40,344 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:00:40,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:40,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:40,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:40,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:00:40,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:40,572 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 05:00:40,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553438096] [2020-10-27 05:00:40,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:40,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:40,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923123252] [2020-10-27 05:00:40,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:40,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:40,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:40,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:40,575 INFO L87 Difference]: Start difference. First operand 12106 states and 18257 transitions. Second operand 5 states. [2020-10-27 05:00:50,266 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:00:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:53,063 INFO L93 Difference]: Finished difference Result 35584 states and 53544 transitions. [2020-10-27 05:00:53,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:53,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-27 05:00:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:53,130 INFO L225 Difference]: With dead ends: 35584 [2020-10-27 05:00:53,130 INFO L226 Difference]: Without dead ends: 23780 [2020-10-27 05:00:53,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:53,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23780 states. [2020-10-27 05:00:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23780 to 23672. [2020-10-27 05:00:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23672 states. [2020-10-27 05:00:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23672 states to 23672 states and 35426 transitions. [2020-10-27 05:00:54,550 INFO L78 Accepts]: Start accepts. Automaton has 23672 states and 35426 transitions. Word has length 305 [2020-10-27 05:00:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:54,551 INFO L481 AbstractCegarLoop]: Abstraction has 23672 states and 35426 transitions. [2020-10-27 05:00:54,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 23672 states and 35426 transitions. [2020-10-27 05:00:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-27 05:00:54,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:54,602 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] [2020-10-27 05:00:54,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:00:54,602 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:54,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1944366158, now seen corresponding path program 1 times [2020-10-27 05:00:54,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:54,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250289116] [2020-10-27 05:00:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:54,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:59,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:59,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 05:00:59,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:00:59,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 05:00:59,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:59,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-27 05:00:59,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:00,707 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:01:00,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:00,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:00,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:01:00,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:00,928 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 05:01:00,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250289116] [2020-10-27 05:01:00,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:00,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:00,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858593902] [2020-10-27 05:01:00,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:00,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:00,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:00,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:00,930 INFO L87 Difference]: Start difference. First operand 23672 states and 35426 transitions. Second operand 5 states. [2020-10-27 05:01:12,564 WARN L193 SmtUtils]: Spent 972.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:01:16,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:16,049 INFO L93 Difference]: Finished difference Result 69230 states and 103296 transitions. [2020-10-27 05:01:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:16,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-27 05:01:16,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:16,244 INFO L225 Difference]: With dead ends: 69230 [2020-10-27 05:01:16,244 INFO L226 Difference]: Without dead ends: 46332 [2020-10-27 05:01:16,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46332 states. [2020-10-27 05:01:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46332 to 46232. [2020-10-27 05:01:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46232 states. [2020-10-27 05:01:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46232 states to 46232 states and 68612 transitions. [2020-10-27 05:01:19,236 INFO L78 Accepts]: Start accepts. Automaton has 46232 states and 68612 transitions. Word has length 307 [2020-10-27 05:01:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:19,236 INFO L481 AbstractCegarLoop]: Abstraction has 46232 states and 68612 transitions. [2020-10-27 05:01:19,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 46232 states and 68612 transitions. [2020-10-27 05:01:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 05:01:19,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:19,305 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] [2020-10-27 05:01:19,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:01:19,306 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:19,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:19,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1251230454, now seen corresponding path program 1 times [2020-10-27 05:01:19,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:19,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501065719] [2020-10-27 05:01:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:20,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:22,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:23,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:24,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:24,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 05:01:24,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:01:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:01:24,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 05:01:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:25,350 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:01:25,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:25,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:25,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:25,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:01:25,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:25,559 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 05:01:25,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501065719] [2020-10-27 05:01:25,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:25,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:25,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858373142] [2020-10-27 05:01:25,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:25,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:25,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:25,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:25,562 INFO L87 Difference]: Start difference. First operand 46232 states and 68612 transitions. Second operand 5 states. [2020-10-27 05:01:38,485 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:01:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:42,647 INFO L93 Difference]: Finished difference Result 135432 states and 200456 transitions. [2020-10-27 05:01:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:42,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-27 05:01:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:42,775 INFO L225 Difference]: With dead ends: 135432 [2020-10-27 05:01:42,776 INFO L226 Difference]: Without dead ends: 90174 [2020-10-27 05:01:43,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:43,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90174 states. [2020-10-27 05:01:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90174 to 90060. [2020-10-27 05:01:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90060 states. [2020-10-27 05:01:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90060 states to 90060 states and 132442 transitions. [2020-10-27 05:01:49,107 INFO L78 Accepts]: Start accepts. Automaton has 90060 states and 132442 transitions. Word has length 309 [2020-10-27 05:01:49,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:49,108 INFO L481 AbstractCegarLoop]: Abstraction has 90060 states and 132442 transitions. [2020-10-27 05:01:49,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 90060 states and 132442 transitions. [2020-10-27 05:01:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 05:01:49,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:49,186 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] [2020-10-27 05:01:49,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:01:49,187 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:49,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1176338270, now seen corresponding path program 1 times [2020-10-27 05:01:49,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:49,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695130861] [2020-10-27 05:01:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:50,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:54,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 05:01:54,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:01:54,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 05:01:54,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-27 05:01:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:55,402 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:01:55,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:55,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:55,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:55,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:55,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:01:55,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:55,580 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 05:01:55,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695130861] [2020-10-27 05:01:55,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:55,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:55,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448631716] [2020-10-27 05:01:55,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:55,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:55,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:55,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:55,583 INFO L87 Difference]: Start difference. First operand 90060 states and 132442 transitions. Second operand 5 states. [2020-10-27 05:02:12,911 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:02:18,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:18,541 INFO L93 Difference]: Finished difference Result 263316 states and 386234 transitions. [2020-10-27 05:02:18,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:18,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-27 05:02:18,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:18,810 INFO L225 Difference]: With dead ends: 263316 [2020-10-27 05:02:18,810 INFO L226 Difference]: Without dead ends: 175658 [2020-10-27 05:02:18,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175658 states. [2020-10-27 05:02:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175658 to 175544. [2020-10-27 05:02:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175544 states. [2020-10-27 05:02:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175544 states to 175544 states and 255752 transitions. [2020-10-27 05:02:30,758 INFO L78 Accepts]: Start accepts. Automaton has 175544 states and 255752 transitions. Word has length 311 [2020-10-27 05:02:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:30,758 INFO L481 AbstractCegarLoop]: Abstraction has 175544 states and 255752 transitions. [2020-10-27 05:02:30,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 175544 states and 255752 transitions. [2020-10-27 05:02:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 05:02:31,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:31,236 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] [2020-10-27 05:02:31,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:02:31,236 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:31,237 INFO L82 PathProgramCache]: Analyzing trace with hash -407241771, now seen corresponding path program 1 times [2020-10-27 05:02:31,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:31,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444471527] [2020-10-27 05:02:31,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:36,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:36,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-27 05:02:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:02:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:02:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:02:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 05:02:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:37,291 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:02:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:37,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:37,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:37,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:02:37,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:37,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:37,468 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 05:02:37,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444471527] [2020-10-27 05:02:37,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:37,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:37,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213764823] [2020-10-27 05:02:37,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:37,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:37,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:37,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:37,471 INFO L87 Difference]: Start difference. First operand 175544 states and 255752 transitions. Second operand 5 states.