/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=DEEPEST --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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:20:58,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:20:58,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:20:59,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:20:59,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:20:59,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:20:59,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:20:59,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:20:59,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:20:59,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:20:59,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:20:59,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:20:59,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:20:59,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:20:59,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:20:59,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:20:59,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:20:59,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:20:59,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:20:59,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:20:59,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:20:59,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:20:59,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:20:59,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:20:59,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:20:59,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:20:59,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:20:59,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:20:59,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:20:59,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:20:59,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:20:59,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:20:59,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:20:59,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:20:59,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:20:59,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:20:59,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:20:59,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:20:59,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:20:59,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:20:59,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:20:59,147 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 23:20:59,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:20:59,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:20:59,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:20:59,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:20:59,176 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:20:59,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:20:59,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:20:59,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:20:59,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:20:59,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:20:59,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:20:59,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:20:59,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:20:59,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:20:59,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:20:59,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:20:59,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:20:59,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:20:59,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:20:59,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:20:59,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:20:59,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:20:59,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:20:59,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:20:59,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:20:59,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:20:59,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:20:59,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:20:59,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:20:59,181 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:20:59,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:20:59,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:20:59,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:20:59,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:20:59,629 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:20:59,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 23:20:59,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04384d68d/ca62a9da9c05456f9eadec5069d3b746/FLAG5d14180df [2020-10-27 23:21:00,539 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:21:00,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 23:21:00,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04384d68d/ca62a9da9c05456f9eadec5069d3b746/FLAG5d14180df [2020-10-27 23:21:00,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04384d68d/ca62a9da9c05456f9eadec5069d3b746 [2020-10-27 23:21:00,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:21:00,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:21:00,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:21:00,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:21:00,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:21:00,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:21:00" (1/1) ... [2020-10-27 23:21:00,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6ee2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:00, skipping insertion in model container [2020-10-27 23:21:00,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:21:00" (1/1) ... [2020-10-27 23:21:00,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:21:00,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:21:01,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:21:01,465 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:21:01,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:21:01,770 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:21:01,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01 WrapperNode [2020-10-27 23:21:01,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:21:01,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:21:01,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:21:01,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:21:01,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (1/1) ... [2020-10-27 23:21:01,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (1/1) ... [2020-10-27 23:21:01,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (1/1) ... [2020-10-27 23:21:01,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (1/1) ... [2020-10-27 23:21:01,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (1/1) ... [2020-10-27 23:21:01,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (1/1) ... [2020-10-27 23:21:01,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (1/1) ... [2020-10-27 23:21:01,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:21:01,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:21:01,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:21:01,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:21:01,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (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 23:21:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:21:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:21:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:21:02,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:21:02,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:21:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:21:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:21:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:21:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:21:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:21:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:21:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:21:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:21:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:21:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:21:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:21:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:21:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:21:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:21:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:21:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:21:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:21:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:21:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:21:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:21:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:21:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:21:03,719 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:21:03,719 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:21:03,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:21:03 BoogieIcfgContainer [2020-10-27 23:21:03,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:21:03,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:21:03,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:21:03,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:21:03,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:21:00" (1/3) ... [2020-10-27 23:21:03,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d692ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:21:03, skipping insertion in model container [2020-10-27 23:21:03,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:21:01" (2/3) ... [2020-10-27 23:21:03,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d692ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:21:03, skipping insertion in model container [2020-10-27 23:21:03,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:21:03" (3/3) ... [2020-10-27 23:21:03,732 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 23:21:03,745 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:21:03,751 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:21:03,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:21:03,798 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:21:03,799 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:21:03,799 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:21:03,799 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:21:03,799 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:21:03,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:21:03,799 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:21:03,800 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:21:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states. [2020-10-27 23:21:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 23:21:03,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:21:03,843 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] [2020-10-27 23:21:03,844 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:21:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:21:03,850 INFO L82 PathProgramCache]: Analyzing trace with hash 722932052, now seen corresponding path program 1 times [2020-10-27 23:21:03,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:21:03,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819859483] [2020-10-27 23:21:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:21:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:04,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:05,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:05,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:05,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:08,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:08,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:09,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:09,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 23:21:09,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:21:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 23:21:09,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:21:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 23:21:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 23:21:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:21:09,881 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:21:09,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:21:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:09,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:09,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:21:09,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:21:09,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:21:09,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:09,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:21:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:21:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:21:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:21:10,015 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 23:21:10,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819859483] [2020-10-27 23:21:10,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:21:10,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:21:10,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302697468] [2020-10-27 23:21:10,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:21:10,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:21:10,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:21:10,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:21:10,051 INFO L87 Difference]: Start difference. First operand 380 states. Second operand 4 states. [2020-10-27 23:21:10,478 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 23:21:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:21:12,924 INFO L93 Difference]: Finished difference Result 688 states and 1222 transitions. [2020-10-27 23:21:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:21:12,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-27 23:21:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:21:12,945 INFO L225 Difference]: With dead ends: 688 [2020-10-27 23:21:12,946 INFO L226 Difference]: Without dead ends: 534 [2020-10-27 23:21:12,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:21:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-10-27 23:21:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 531. [2020-10-27 23:21:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-27 23:21:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 784 transitions. [2020-10-27 23:21:13,053 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 784 transitions. Word has length 138 [2020-10-27 23:21:13,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:21:13,054 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 784 transitions. [2020-10-27 23:21:13,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:21:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 784 transitions. [2020-10-27 23:21:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 23:21:13,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:21:13,063 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] [2020-10-27 23:21:13,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:21:13,063 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:21:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:21:13,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1177981988, now seen corresponding path program 1 times [2020-10-27 23:21:13,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:21:13,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795535516] [2020-10-27 23:21:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:21:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:16,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:18,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:18,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 23:21:18,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:21:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:21:18,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:21:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:21:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 23:21:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:18,569 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:21:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:21:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:18,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:18,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:21:18,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:21:18,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:21:18,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:21:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:21:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:21:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:18,660 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 23:21:18,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795535516] [2020-10-27 23:21:18,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:21:18,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:21:18,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861920230] [2020-10-27 23:21:18,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:21:18,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:21:18,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:21:18,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:21:18,677 INFO L87 Difference]: Start difference. First operand 531 states and 784 transitions. Second operand 4 states. [2020-10-27 23:21:19,009 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 23:21:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:21:21,106 INFO L93 Difference]: Finished difference Result 1067 states and 1623 transitions. [2020-10-27 23:21:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:21:21,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-27 23:21:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:21:21,119 INFO L225 Difference]: With dead ends: 1067 [2020-10-27 23:21:21,119 INFO L226 Difference]: Without dead ends: 876 [2020-10-27 23:21:21,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:21:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-27 23:21:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 873. [2020-10-27 23:21:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-10-27 23:21:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1308 transitions. [2020-10-27 23:21:21,184 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1308 transitions. Word has length 138 [2020-10-27 23:21:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:21:21,185 INFO L481 AbstractCegarLoop]: Abstraction has 873 states and 1308 transitions. [2020-10-27 23:21:21,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:21:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1308 transitions. [2020-10-27 23:21:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 23:21:21,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:21:21,190 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] [2020-10-27 23:21:21,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:21:21,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:21:21,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:21:21,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1188479053, now seen corresponding path program 1 times [2020-10-27 23:21:21,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:21:21,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833626685] [2020-10-27 23:21:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:21:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:21,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:21,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:21,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:26,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:26,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 23:21:26,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:21:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:21:26,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:21:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:21:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 23:21:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:21:26,700 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:21:26,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:21:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:26,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:26,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:21:26,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:21:26,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:21:26,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:21:26,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:21:26,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:21:26,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:26,776 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 23:21:26,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833626685] [2020-10-27 23:21:26,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:21:26,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:21:26,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687782180] [2020-10-27 23:21:26,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:21:26,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:21:26,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:21:26,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:21:26,780 INFO L87 Difference]: Start difference. First operand 873 states and 1308 transitions. Second operand 5 states. [2020-10-27 23:21:29,184 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:21:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:21:30,401 INFO L93 Difference]: Finished difference Result 2529 states and 3780 transitions. [2020-10-27 23:21:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:21:30,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-27 23:21:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:21:30,413 INFO L225 Difference]: With dead ends: 2529 [2020-10-27 23:21:30,413 INFO L226 Difference]: Without dead ends: 1681 [2020-10-27 23:21:30,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:21:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2020-10-27 23:21:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1648. [2020-10-27 23:21:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-10-27 23:21:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2452 transitions. [2020-10-27 23:21:30,573 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2452 transitions. Word has length 138 [2020-10-27 23:21:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:21:30,573 INFO L481 AbstractCegarLoop]: Abstraction has 1648 states and 2452 transitions. [2020-10-27 23:21:30,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:21:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2452 transitions. [2020-10-27 23:21:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 23:21:30,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:21:30,579 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] [2020-10-27 23:21:30,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:21:30,579 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:21:30,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:21:30,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1028797494, now seen corresponding path program 1 times [2020-10-27 23:21:30,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:21:30,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216552411] [2020-10-27 23:21:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:21:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:31,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:35,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:35,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 23:21:35,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:21:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:21:35,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:35,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:21:35,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:21:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:21:35,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:35,974 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:21:35,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:21:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:36,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:36,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:21:36,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:21:36,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:21:36,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:21:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:21:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:21:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:36,039 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 23:21:36,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216552411] [2020-10-27 23:21:36,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:21:36,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:21:36,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393524127] [2020-10-27 23:21:36,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:21:36,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:21:36,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:21:36,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:21:36,043 INFO L87 Difference]: Start difference. First operand 1648 states and 2452 transitions. Second operand 4 states. [2020-10-27 23:21:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:21:38,286 INFO L93 Difference]: Finished difference Result 4892 states and 7276 transitions. [2020-10-27 23:21:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:21:38,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-27 23:21:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:21:38,305 INFO L225 Difference]: With dead ends: 4892 [2020-10-27 23:21:38,306 INFO L226 Difference]: Without dead ends: 3272 [2020-10-27 23:21:38,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:21:38,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-10-27 23:21:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1650. [2020-10-27 23:21:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1650 states. [2020-10-27 23:21:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2454 transitions. [2020-10-27 23:21:38,440 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2454 transitions. Word has length 139 [2020-10-27 23:21:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:21:38,440 INFO L481 AbstractCegarLoop]: Abstraction has 1650 states and 2454 transitions. [2020-10-27 23:21:38,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:21:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2454 transitions. [2020-10-27 23:21:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 23:21:38,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:21:38,444 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] [2020-10-27 23:21:38,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:21:38,445 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:21:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:21:38,445 INFO L82 PathProgramCache]: Analyzing trace with hash 127609492, now seen corresponding path program 1 times [2020-10-27 23:21:38,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:21:38,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960849126] [2020-10-27 23:21:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:21:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:38,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:43,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:43,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 23:21:43,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:21:43,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:21:43,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:21:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:21:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 23:21:43,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:43,896 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:21:43,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:21:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:43,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:43,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:21:43,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:21:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:21:43,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:21:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:21:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:21:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:21:43,985 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 23:21:43,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960849126] [2020-10-27 23:21:43,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:21:43,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:21:43,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448861259] [2020-10-27 23:21:43,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:21:43,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:21:43,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:21:43,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:21:43,988 INFO L87 Difference]: Start difference. First operand 1650 states and 2454 transitions. Second operand 5 states. [2020-10-27 23:21:46,385 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:21:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:21:47,232 INFO L93 Difference]: Finished difference Result 4765 states and 7078 transitions. [2020-10-27 23:21:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:21:47,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-27 23:21:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:21:47,249 INFO L225 Difference]: With dead ends: 4765 [2020-10-27 23:21:47,249 INFO L226 Difference]: Without dead ends: 3185 [2020-10-27 23:21:47,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:21:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2020-10-27 23:21:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 3158. [2020-10-27 23:21:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3158 states. [2020-10-27 23:21:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 4644 transitions. [2020-10-27 23:21:47,509 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 4644 transitions. Word has length 140 [2020-10-27 23:21:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:21:47,510 INFO L481 AbstractCegarLoop]: Abstraction has 3158 states and 4644 transitions. [2020-10-27 23:21:47,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:21:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 4644 transitions. [2020-10-27 23:21:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 23:21:47,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:21:47,515 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] [2020-10-27 23:21:47,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:21:47,516 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:21:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:21:47,516 INFO L82 PathProgramCache]: Analyzing trace with hash -222814870, now seen corresponding path program 1 times [2020-10-27 23:21:47,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:21:47,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052387513] [2020-10-27 23:21:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:21:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:47,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:47,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:47,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:52,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 23:21:52,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:21:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:21:52,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:21:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:21:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:21:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:52,917 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:21:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:21:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:52,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:21:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:21:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:21:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:21:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:21:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:21:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:52,978 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 23:21:52,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052387513] [2020-10-27 23:21:52,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:21:52,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:21:52,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912665554] [2020-10-27 23:21:52,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:21:52,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:21:52,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:21:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:21:52,981 INFO L87 Difference]: Start difference. First operand 3158 states and 4644 transitions. Second operand 4 states. [2020-10-27 23:21:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:21:56,242 INFO L93 Difference]: Finished difference Result 9388 states and 13815 transitions. [2020-10-27 23:21:56,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:21:56,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-10-27 23:21:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:21:56,272 INFO L225 Difference]: With dead ends: 9388 [2020-10-27 23:21:56,272 INFO L226 Difference]: Without dead ends: 6300 [2020-10-27 23:21:56,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:21:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2020-10-27 23:21:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 3161. [2020-10-27 23:21:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3161 states. [2020-10-27 23:21:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4648 transitions. [2020-10-27 23:21:56,551 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4648 transitions. Word has length 141 [2020-10-27 23:21:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:21:56,552 INFO L481 AbstractCegarLoop]: Abstraction has 3161 states and 4648 transitions. [2020-10-27 23:21:56,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:21:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4648 transitions. [2020-10-27 23:21:56,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 23:21:56,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:21:56,558 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] [2020-10-27 23:21:56,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:21:56,559 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:21:56,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:21:56,559 INFO L82 PathProgramCache]: Analyzing trace with hash -509697931, now seen corresponding path program 1 times [2020-10-27 23:21:56,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:21:56,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120432148] [2020-10-27 23:21:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:21:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:56,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:56,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:56,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:59,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:59,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 23:21:59,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:21:59,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-27 23:21:59,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:21:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:21:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:21:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:59,688 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:21:59,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:21:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:21:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:21:59,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:21:59,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:21:59,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:21:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:21:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:21:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:21:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:21:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:21:59,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:21:59,792 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 23:21:59,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120432148] [2020-10-27 23:21:59,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:21:59,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:21:59,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433579928] [2020-10-27 23:21:59,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:21:59,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:21:59,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:21:59,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:21:59,798 INFO L87 Difference]: Start difference. First operand 3161 states and 4648 transitions. Second operand 5 states. [2020-10-27 23:22:02,321 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:22:03,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:03,637 INFO L93 Difference]: Finished difference Result 8312 states and 12218 transitions. [2020-10-27 23:22:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:22:03,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-27 23:22:03,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:03,661 INFO L225 Difference]: With dead ends: 8312 [2020-10-27 23:22:03,661 INFO L226 Difference]: Without dead ends: 5441 [2020-10-27 23:22:03,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:22:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2020-10-27 23:22:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 5404. [2020-10-27 23:22:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5404 states. [2020-10-27 23:22:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 7836 transitions. [2020-10-27 23:22:04,170 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 7836 transitions. Word has length 142 [2020-10-27 23:22:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:04,170 INFO L481 AbstractCegarLoop]: Abstraction has 5404 states and 7836 transitions. [2020-10-27 23:22:04,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:22:04,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 7836 transitions. [2020-10-27 23:22:04,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 23:22:04,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:04,179 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] [2020-10-27 23:22:04,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:22:04,179 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:04,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1386025078, now seen corresponding path program 1 times [2020-10-27 23:22:04,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:04,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886866981] [2020-10-27 23:22:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:04,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:04,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 23:22:04,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:22:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-27 23:22:04,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:22:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:22:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:22:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:05,113 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:22:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:05,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:05,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:05,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:22:05,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:05,164 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 23:22:05,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886866981] [2020-10-27 23:22:05,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:05,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:22:05,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148047004] [2020-10-27 23:22:05,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:22:05,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:05,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:22:05,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:22:05,167 INFO L87 Difference]: Start difference. First operand 5404 states and 7836 transitions. Second operand 4 states. [2020-10-27 23:22:08,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:08,811 INFO L93 Difference]: Finished difference Result 15998 states and 23163 transitions. [2020-10-27 23:22:08,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:22:08,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-27 23:22:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:08,860 INFO L225 Difference]: With dead ends: 15998 [2020-10-27 23:22:08,860 INFO L226 Difference]: Without dead ends: 10708 [2020-10-27 23:22:08,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:22:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10708 states. [2020-10-27 23:22:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10708 to 5420. [2020-10-27 23:22:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5420 states. [2020-10-27 23:22:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 7852 transitions. [2020-10-27 23:22:09,404 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 7852 transitions. Word has length 143 [2020-10-27 23:22:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:09,405 INFO L481 AbstractCegarLoop]: Abstraction has 5420 states and 7852 transitions. [2020-10-27 23:22:09,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:22:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 7852 transitions. [2020-10-27 23:22:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 23:22:09,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:09,413 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] [2020-10-27 23:22:09,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:22:09,413 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:09,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1040401071, now seen corresponding path program 1 times [2020-10-27 23:22:09,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:09,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150645666] [2020-10-27 23:22:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:09,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:10,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:10,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 23:22:10,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:22:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-27 23:22:10,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:22:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:22:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 23:22:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:10,817 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:22:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:10,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:10,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:10,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:10,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:10,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:22:10,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:10,886 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 23:22:10,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150645666] [2020-10-27 23:22:10,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:10,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:22:10,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859955012] [2020-10-27 23:22:10,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:22:10,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:10,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:22:10,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:22:10,888 INFO L87 Difference]: Start difference. First operand 5420 states and 7852 transitions. Second operand 5 states. [2020-10-27 23:22:13,599 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:22:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:15,325 INFO L93 Difference]: Finished difference Result 15287 states and 22173 transitions. [2020-10-27 23:22:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:22:15,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 23:22:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:15,346 INFO L225 Difference]: With dead ends: 15287 [2020-10-27 23:22:15,347 INFO L226 Difference]: Without dead ends: 10445 [2020-10-27 23:22:15,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:22:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10445 states. [2020-10-27 23:22:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10445 to 10408. [2020-10-27 23:22:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10408 states. [2020-10-27 23:22:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10408 states to 10408 states and 14898 transitions. [2020-10-27 23:22:16,497 INFO L78 Accepts]: Start accepts. Automaton has 10408 states and 14898 transitions. Word has length 144 [2020-10-27 23:22:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:16,497 INFO L481 AbstractCegarLoop]: Abstraction has 10408 states and 14898 transitions. [2020-10-27 23:22:16,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:22:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10408 states and 14898 transitions. [2020-10-27 23:22:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 23:22:16,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:16,513 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] [2020-10-27 23:22:16,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:22:16,513 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2011313046, now seen corresponding path program 1 times [2020-10-27 23:22:16,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:16,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82972453] [2020-10-27 23:22:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 23:22:16,567 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 23:22:16,567 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 23:22:16,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:22:16,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 11:22:16 BoogieIcfgContainer [2020-10-27 23:22:16,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 23:22:16,622 INFO L168 Benchmark]: Toolchain (without parser) took 75867.93 ms. Allocated memory was 154.1 MB in the beginning and 1.0 GB in the end (delta: 894.4 MB). Free memory was 127.1 MB in the beginning and 933.8 MB in the end (delta: -806.6 MB). Peak memory consumption was 88.5 MB. Max. memory is 8.0 GB. [2020-10-27 23:22:16,623 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 154.1 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 23:22:16,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1007.08 ms. Allocated memory is still 154.1 MB. Free memory was 126.6 MB in the beginning and 130.5 MB in the end (delta: -3.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 8.0 GB. [2020-10-27 23:22:16,624 INFO L168 Benchmark]: Boogie Preprocessor took 150.55 ms. Allocated memory is still 154.1 MB. Free memory was 130.5 MB in the beginning and 125.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 23:22:16,625 INFO L168 Benchmark]: RCFGBuilder took 1799.32 ms. Allocated memory was 154.1 MB in the beginning and 203.4 MB in the end (delta: 49.3 MB). Free memory was 125.8 MB in the beginning and 84.0 MB in the end (delta: 41.8 MB). Peak memory consumption was 91.6 MB. Max. memory is 8.0 GB. [2020-10-27 23:22:16,626 INFO L168 Benchmark]: TraceAbstraction took 72896.97 ms. Allocated memory was 203.4 MB in the beginning and 1.0 GB in the end (delta: 845.2 MB). Free memory was 84.0 MB in the beginning and 933.8 MB in the end (delta: -849.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 23:22:16,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 154.1 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1007.08 ms. Allocated memory is still 154.1 MB. Free memory was 126.6 MB in the beginning and 130.5 MB in the end (delta: -3.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 150.55 ms. Allocated memory is still 154.1 MB. Free memory was 130.5 MB in the beginning and 125.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1799.32 ms. Allocated memory was 154.1 MB in the beginning and 203.4 MB in the end (delta: 49.3 MB). Free memory was 125.8 MB in the beginning and 84.0 MB in the end (delta: 41.8 MB). Peak memory consumption was 91.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 72896.97 ms. Allocated memory was 203.4 MB in the beginning and 1.0 GB in the end (delta: 845.2 MB). Free memory was 84.0 MB in the beginning and 933.8 MB in the end (delta: -849.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1708; [L70] int __return_1836; [L71] int __return_1954; [L72] int __return_2075; [L73] int __return_2801; [L74] int __return_2770; [L75] int __return_2712; [L76] int __return_2678; [L77] int __tmp_2199_0; [L78] int __return_2307; [L79] int __return_2212; [L80] int __return_2575; [L81] int __return_2541; [L82] int __return_2462; [L83] int __return_2198; [L86] int main__c1; [L87] int main__i2; [L88] main__c1 = 0 [L89] ep12 = __VERIFIER_nondet_bool() [L90] ep13 = __VERIFIER_nondet_bool() [L91] ep21 = __VERIFIER_nondet_bool() [L92] ep23 = __VERIFIER_nondet_bool() [L93] ep31 = __VERIFIER_nondet_bool() [L94] ep32 = __VERIFIER_nondet_bool() [L95] id1 = __VERIFIER_nondet_char() [L96] r1 = __VERIFIER_nondet_char() [L97] st1 = __VERIFIER_nondet_char() [L98] nl1 = __VERIFIER_nondet_char() [L99] m1 = __VERIFIER_nondet_char() [L100] max1 = __VERIFIER_nondet_char() [L101] mode1 = __VERIFIER_nondet_bool() [L102] id2 = __VERIFIER_nondet_char() [L103] r2 = __VERIFIER_nondet_char() [L104] st2 = __VERIFIER_nondet_char() [L105] nl2 = __VERIFIER_nondet_char() [L106] m2 = __VERIFIER_nondet_char() [L107] max2 = __VERIFIER_nondet_char() [L108] mode2 = __VERIFIER_nondet_bool() [L109] id3 = __VERIFIER_nondet_char() [L110] r3 = __VERIFIER_nondet_char() [L111] st3 = __VERIFIER_nondet_char() [L112] nl3 = __VERIFIER_nondet_char() [L113] m3 = __VERIFIER_nondet_char() [L114] max3 = __VERIFIER_nondet_char() [L115] mode3 = __VERIFIER_nondet_bool() [L117] _Bool init__r121; [L118] _Bool init__r131; [L119] _Bool init__r211; [L120] _Bool init__r231; [L121] _Bool init__r311; [L122] _Bool init__r321; [L123] _Bool init__r122; [L124] int init__tmp; [L125] _Bool init__r132; [L126] int init__tmp___0; [L127] _Bool init__r212; [L128] int init__tmp___1; [L129] _Bool init__r232; [L130] int init__tmp___2; [L131] _Bool init__r312; [L132] int init__tmp___3; [L133] _Bool init__r322; [L134] int init__tmp___4; [L135] int init__tmp___5; [L136] init__r121 = ep12 [L137] init__r131 = ep13 [L138] init__r211 = ep21 [L139] init__r231 = ep23 [L140] init__r311 = ep31 [L141] init__r321 = ep32 [L142] COND FALSE !(!(init__r121 == 0)) [L2912] COND FALSE !(!(init__r131 == 0)) [L2928] init__tmp = 0 [L146] init__r122 = (_Bool)init__tmp [L147] COND FALSE !(!(init__r131 == 0)) [L2889] COND FALSE !(!(init__r121 == 0)) [L2905] init__tmp___0 = 0 [L151] init__r132 = (_Bool)init__tmp___0 [L152] COND FALSE !(!(init__r211 == 0)) [L2866] COND FALSE !(!(init__r231 == 0)) [L2882] init__tmp___1 = 0 [L156] init__r212 = (_Bool)init__tmp___1 [L157] COND FALSE !(!(init__r231 == 0)) [L2843] COND FALSE !(!(init__r211 == 0)) [L2859] init__tmp___2 = 0 [L161] init__r232 = (_Bool)init__tmp___2 [L162] COND FALSE !(!(init__r311 == 0)) [L2820] COND FALSE !(!(init__r321 == 0)) [L2836] init__tmp___3 = 0 [L166] init__r312 = (_Bool)init__tmp___3 [L167] COND FALSE !(!(init__r321 == 0)) [L2797] COND FALSE !(!(init__r311 == 0)) [L2813] init__tmp___4 = 0 [L171] init__r322 = (_Bool)init__tmp___4 [L172] COND TRUE ((int)id1) != ((int)id2) [L174] COND TRUE ((int)id1) != ((int)id3) [L176] COND TRUE ((int)id2) != ((int)id3) [L178] COND TRUE ((int)id1) >= 0 [L180] COND TRUE ((int)id2) >= 0 [L182] COND TRUE ((int)id3) >= 0 [L184] COND TRUE ((int)r1) == 0 [L186] COND TRUE ((int)r2) == 0 [L188] COND TRUE ((int)r3) == 0 [L190] COND TRUE ((int)max1) == ((int)id1) [L192] COND TRUE ((int)max2) == ((int)id2) [L194] COND TRUE ((int)max3) == ((int)id3) [L196] COND TRUE ((int)st1) == 0 [L198] COND TRUE ((int)st2) == 0 [L200] COND TRUE ((int)st3) == 0 [L202] COND TRUE ((int)nl1) == 0 [L204] COND TRUE ((int)nl2) == 0 [L206] COND TRUE ((int)nl3) == 0 [L208] COND TRUE ((int)mode1) == 0 [L210] COND TRUE ((int)mode2) == 0 [L212] COND TRUE ((int)mode3) == 0 [L214] init__tmp___5 = 1 [L215] __return_1708 = init__tmp___5 [L216] main__i2 = __return_1708 [L217] COND TRUE main__i2 != 0 [L219] p12_old = nomsg [L220] p12_new = nomsg [L221] p13_old = nomsg [L222] p13_new = nomsg [L223] p21_old = nomsg [L224] p21_new = nomsg [L225] p23_old = nomsg [L226] p23_new = nomsg [L227] p31_old = nomsg [L228] p31_new = nomsg [L229] p32_old = nomsg [L230] p32_new = nomsg [L231] main__i2 = 0 [L232] COND TRUE main__i2 < 6 [L235] COND FALSE !(!(mode1 == 0)) [L241] COND TRUE ((int)r1) < 2 [L243] COND FALSE !(!(ep12 == 0)) [L254] COND FALSE !(!(ep13 == 0)) [L265] mode1 = 1 [L267] COND FALSE !(!(mode2 == 0)) [L273] COND TRUE ((int)r2) < 2 [L275] COND FALSE !(!(ep21 == 0)) [L286] COND FALSE !(!(ep23 == 0)) [L297] mode2 = 1 [L299] COND FALSE !(!(mode3 == 0)) [L305] COND TRUE ((int)r3) < 2 [L307] COND FALSE !(!(ep31 == 0)) [L318] COND FALSE !(!(ep32 == 0)) [L329] mode3 = 1 [L330] p12_old = p12_new [L331] p12_new = nomsg [L332] p13_old = p13_new [L333] p13_new = nomsg [L334] p21_old = p21_new [L335] p21_new = nomsg [L336] p23_old = p23_new [L337] p23_new = nomsg [L338] p31_old = p31_new [L339] p31_new = nomsg [L340] p32_old = p32_new [L341] p32_new = nomsg [L343] int check__tmp; [L344] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L346] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L348] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L350] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L352] COND FALSE !(((int)r1) >= 2) [L358] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L360] COND TRUE ((int)r1) < 2 [L362] COND FALSE !(((int)r1) >= 2) [L368] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L370] COND TRUE ((int)r1) < 2 [L372] check__tmp = 1 [L373] __return_1836 = check__tmp [L374] main__c1 = __return_1836 [L376] _Bool __tmp_1; [L377] __tmp_1 = main__c1 [L378] _Bool assert__arg; [L379] assert__arg = __tmp_1 [L380] COND FALSE !(assert__arg == 0) [L386] int main____CPAchecker_TMP_0 = main__i2; [L387] main__i2 = main__i2 + 1 [L388] COND TRUE main__i2 < 6 [L391] COND TRUE !(mode1 == 0) [L393] r1 = (char)(((int)r1) + 1) [L394] COND FALSE !(!(ep21 == 0)) [L402] COND FALSE !(!(ep31 == 0)) [L410] COND FALSE !(((int)r1) == 2) [L416] mode1 = 0 [L418] COND TRUE !(mode2 == 0) [L420] r2 = (char)(((int)r2) + 1) [L421] COND FALSE !(!(ep12 == 0)) [L429] COND FALSE !(!(ep32 == 0)) [L437] COND FALSE !(((int)r2) == 2) [L443] mode2 = 0 [L445] COND TRUE !(mode3 == 0) [L447] r3 = (char)(((int)r3) + 1) [L448] COND FALSE !(!(ep13 == 0)) [L456] COND FALSE !(!(ep23 == 0)) [L464] COND FALSE !(((int)r3) == 2) [L470] mode3 = 0 [L471] p12_old = p12_new [L472] p12_new = nomsg [L473] p13_old = p13_new [L474] p13_new = nomsg [L475] p21_old = p21_new [L476] p21_new = nomsg [L477] p23_old = p23_new [L478] p23_new = nomsg [L479] p31_old = p31_new [L480] p31_new = nomsg [L481] p32_old = p32_new [L482] p32_new = nomsg [L484] int check__tmp; [L485] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L487] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L489] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L491] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L493] COND FALSE !(((int)r1) >= 2) [L499] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L501] COND TRUE ((int)r1) < 2 [L503] COND FALSE !(((int)r1) >= 2) [L509] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L511] COND TRUE ((int)r1) < 2 [L513] check__tmp = 1 [L514] __return_1954 = check__tmp [L515] main__c1 = __return_1954 [L517] _Bool __tmp_2; [L518] __tmp_2 = main__c1 [L519] _Bool assert__arg; [L520] assert__arg = __tmp_2 [L521] COND FALSE !(assert__arg == 0) [L527] int main____CPAchecker_TMP_0 = main__i2; [L528] main__i2 = main__i2 + 1 [L529] COND TRUE main__i2 < 6 [L532] COND FALSE !(!(mode1 == 0)) [L538] COND TRUE ((int)r1) < 2 [L540] COND FALSE !(!(ep12 == 0)) [L551] COND FALSE !(!(ep13 == 0)) [L562] mode1 = 1 [L564] COND FALSE !(!(mode2 == 0)) [L570] COND TRUE ((int)r2) < 2 [L572] COND FALSE !(!(ep21 == 0)) [L583] COND FALSE !(!(ep23 == 0)) [L594] mode2 = 1 [L596] COND FALSE !(!(mode3 == 0)) [L602] COND TRUE ((int)r3) < 2 [L604] COND FALSE !(!(ep31 == 0)) [L615] COND FALSE !(!(ep32 == 0)) [L626] mode3 = 1 [L627] p12_old = p12_new [L628] p12_new = nomsg [L629] p13_old = p13_new [L630] p13_new = nomsg [L631] p21_old = p21_new [L632] p21_new = nomsg [L633] p23_old = p23_new [L634] p23_new = nomsg [L635] p31_old = p31_new [L636] p31_new = nomsg [L637] p32_old = p32_new [L638] p32_new = nomsg [L640] int check__tmp; [L641] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L643] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L645] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L647] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L649] COND FALSE !(((int)r1) >= 2) [L655] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L657] COND TRUE ((int)r1) < 2 [L659] COND FALSE !(((int)r1) >= 2) [L665] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L667] COND TRUE ((int)r1) < 2 [L669] check__tmp = 1 [L670] __return_2075 = check__tmp [L671] main__c1 = __return_2075 [L673] _Bool __tmp_3; [L674] __tmp_3 = main__c1 [L675] _Bool assert__arg; [L676] assert__arg = __tmp_3 [L677] COND FALSE !(assert__arg == 0) [L683] int main____CPAchecker_TMP_0 = main__i2; [L684] main__i2 = main__i2 + 1 [L685] COND TRUE main__i2 < 6 [L688] COND TRUE !(mode1 == 0) [L690] r1 = (char)(((int)r1) + 1) [L691] COND FALSE !(!(ep21 == 0)) [L699] COND FALSE !(!(ep31 == 0)) [L707] COND TRUE ((int)r1) == 2 [L709] COND TRUE ((int)max1) == ((int)id1) [L711] st1 = 1 [L712] mode1 = 0 [L714] COND TRUE !(mode2 == 0) [L716] r2 = (char)(((int)r2) + 1) [L717] COND FALSE !(!(ep12 == 0)) [L725] COND FALSE !(!(ep32 == 0)) [L733] COND TRUE ((int)r2) == 2 [L735] COND TRUE ((int)max2) == ((int)id2) [L737] st2 = 1 [L738] mode2 = 0 [L740] COND TRUE !(mode3 == 0) [L742] r3 = (char)(((int)r3) + 1) [L743] COND FALSE !(!(ep13 == 0)) [L751] COND FALSE !(!(ep23 == 0)) [L759] COND TRUE ((int)r3) == 2 [L761] COND TRUE ((int)max3) == ((int)id3) [L763] st3 = 1 [L764] mode3 = 0 [L765] p12_old = p12_new [L766] p12_new = nomsg [L767] p13_old = p13_new [L768] p13_new = nomsg [L769] p21_old = p21_new [L770] p21_new = nomsg [L771] p23_old = p23_new [L772] p23_new = nomsg [L773] p31_old = p31_new [L774] p31_new = nomsg [L775] p32_old = p32_new [L776] p32_new = nomsg [L778] int check__tmp; [L779] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L785] check__tmp = 0 [L786] __return_2801 = check__tmp [L787] main__c1 = __return_2801 [L789] _Bool __tmp_4; [L790] __tmp_4 = main__c1 [L791] _Bool assert__arg; [L792] assert__arg = __tmp_4 [L793] COND TRUE assert__arg == 0 [L795] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 384 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 72.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 29.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7553 SDtfs, 6448 SDslu, 4322 SDs, 0 SdLazy, 8048 SolverSat, 159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10408occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 10189 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 38.2s InterpolantComputationTime, 1407 NumberOfCodeBlocks, 1407 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1254 ConstructedInterpolants, 0 QuantifiedInterpolants, 880916 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...