/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:55:53,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:55:53,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:55:53,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:55:53,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:55:53,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:55:53,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:55:53,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:55:53,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:55:53,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:55:53,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:55:53,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:55:53,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:55:53,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:55:53,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:55:53,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:55:53,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:55:53,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:55:53,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:55:53,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:55:53,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:55:53,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:55:53,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:55:53,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:55:53,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:55:53,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:55:53,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:55:53,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:55:53,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:55:53,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:55:53,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:55:54,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:55:54,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:55:54,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:55:54,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:55:54,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:55:54,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:55:54,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:55:54,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:55:54,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:55:54,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:55:54,009 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 05:55:54,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:55:54,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:55:54,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:55:54,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:55:54,077 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:55:54,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:55:54,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:55:54,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:55:54,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:55:54,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:55:54,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:55:54,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:55:54,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:55:54,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:55:54,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:55:54,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:55:54,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:55:54,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:55:54,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:55:54,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:55:54,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:55:54,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:55:54,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:55:54,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:55:54,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:55:54,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:55:54,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:55:54,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:55:54,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:55:54,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:55:54,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:55:54,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:55:54,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:55:54,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:55:54,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:55:54,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:55:54,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43319d6fb/c44a140661f14367b1358244d8bc0ad7/FLAG359ecccc7 [2020-10-27 05:55:55,445 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:55:55,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:55:55,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43319d6fb/c44a140661f14367b1358244d8bc0ad7/FLAG359ecccc7 [2020-10-27 05:55:55,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43319d6fb/c44a140661f14367b1358244d8bc0ad7 [2020-10-27 05:55:55,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:55:55,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:55:55,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:55:55,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:55:55,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:55:55,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:55:55" (1/1) ... [2020-10-27 05:55:55,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139426f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:55, skipping insertion in model container [2020-10-27 05:55:55,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:55:55" (1/1) ... [2020-10-27 05:55:55,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:55:55,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:55:56,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:55:56,503 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:55:56,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:55:56,824 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:55:56,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56 WrapperNode [2020-10-27 05:55:56,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:55:56,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:55:56,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:55:56,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:55:56,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (1/1) ... [2020-10-27 05:55:56,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (1/1) ... [2020-10-27 05:55:56,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (1/1) ... [2020-10-27 05:55:56,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (1/1) ... [2020-10-27 05:55:56,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (1/1) ... [2020-10-27 05:55:56,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (1/1) ... [2020-10-27 05:55:56,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (1/1) ... [2020-10-27 05:55:56,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:55:56,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:55:56,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:55:56,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:55:56,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (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 05:55:57,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:55:57,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:55:57,080 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:55:57,080 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:55:57,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:55:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:55:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:55:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:55:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:55:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:55:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:55:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:55:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:55:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:55:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:55:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:55:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:55:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:55:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:55:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:55:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:55:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:55:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:55:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:55:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:55:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:55:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:55:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:55:58,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:55:58,713 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:55:58,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:55:58 BoogieIcfgContainer [2020-10-27 05:55:58,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:55:58,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:55:58,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:55:58,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:55:58,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:55:55" (1/3) ... [2020-10-27 05:55:58,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fe4a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:55:58, skipping insertion in model container [2020-10-27 05:55:58,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:55:56" (2/3) ... [2020-10-27 05:55:58,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fe4a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:55:58, skipping insertion in model container [2020-10-27 05:55:58,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:55:58" (3/3) ... [2020-10-27 05:55:58,740 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:55:58,775 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:55:58,787 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:55:58,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:55:58,863 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:55:58,863 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:55:58,864 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:55:58,864 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:55:58,864 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:55:58,864 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:55:58,864 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:55:58,864 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:55:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-27 05:55:58,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 05:55:58,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:55:58,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:55:58,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:55:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:55:58,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1599261146, now seen corresponding path program 1 times [2020-10-27 05:55:58,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:55:58,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462399911] [2020-10-27 05:55:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:55:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:55:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:55:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:04,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 05:56:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:56:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 05:56:04,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:56:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:56:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:56:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:56:05,014 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:56:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:05,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:05,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:05,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:05,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:56:05,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:05,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:05,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:56:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:05,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462399911] [2020-10-27 05:56:05,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:05,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:56:05,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669248219] [2020-10-27 05:56:05,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:56:05,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:05,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:56:05,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:05,184 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 5 states. [2020-10-27 05:56:07,936 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:09,118 INFO L93 Difference]: Finished difference Result 974 states and 1704 transitions. [2020-10-27 05:56:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:56:09,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 05:56:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:09,157 INFO L225 Difference]: With dead ends: 974 [2020-10-27 05:56:09,157 INFO L226 Difference]: Without dead ends: 642 [2020-10-27 05:56:09,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:56:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-27 05:56:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 639. [2020-10-27 05:56:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-27 05:56:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 932 transitions. [2020-10-27 05:56:09,318 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 932 transitions. Word has length 154 [2020-10-27 05:56:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:09,319 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 932 transitions. [2020-10-27 05:56:09,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:56:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 932 transitions. [2020-10-27 05:56:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 05:56:09,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:09,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:56:09,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:56:09,338 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:09,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2122681391, now seen corresponding path program 1 times [2020-10-27 05:56:09,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:09,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201372702] [2020-10-27 05:56:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:09,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:09,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:10,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:10,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:11,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:13,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:13,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:14,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:14,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 05:56:14,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:56:14,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:56:14,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:56:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:56:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:56:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:56:14,879 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:56:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:14,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:14,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:14,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:14,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:56:14,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:14,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:14,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:14,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:14,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201372702] [2020-10-27 05:56:14,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:14,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:56:14,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379279275] [2020-10-27 05:56:14,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:56:14,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:15,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:56:15,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:15,004 INFO L87 Difference]: Start difference. First operand 639 states and 932 transitions. Second operand 5 states. [2020-10-27 05:56:17,032 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:18,161 INFO L93 Difference]: Finished difference Result 1859 states and 2705 transitions. [2020-10-27 05:56:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:56:18,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 05:56:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:18,170 INFO L225 Difference]: With dead ends: 1859 [2020-10-27 05:56:18,170 INFO L226 Difference]: Without dead ends: 1231 [2020-10-27 05:56:18,175 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 05:56:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-10-27 05:56:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1228. [2020-10-27 05:56:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-10-27 05:56:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1771 transitions. [2020-10-27 05:56:18,262 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1771 transitions. Word has length 155 [2020-10-27 05:56:18,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:18,263 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1771 transitions. [2020-10-27 05:56:18,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:56:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1771 transitions. [2020-10-27 05:56:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 05:56:18,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:18,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:56:18,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:56:18,268 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:18,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1516005143, now seen corresponding path program 1 times [2020-10-27 05:56:18,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:18,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555401128] [2020-10-27 05:56:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:18,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:18,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:19,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:23,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:23,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:23,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 05:56:23,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:56:23,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 05:56:23,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:23,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:56:23,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:56:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:56:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:23,807 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:56:23,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:23,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:23,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:56:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:23,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555401128] [2020-10-27 05:56:23,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:23,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:56:23,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586377445] [2020-10-27 05:56:23,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:56:23,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:23,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:56:23,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:23,965 INFO L87 Difference]: Start difference. First operand 1228 states and 1771 transitions. Second operand 5 states. [2020-10-27 05:56:26,481 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:27,762 INFO L93 Difference]: Finished difference Result 3305 states and 4779 transitions. [2020-10-27 05:56:27,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:56:27,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-27 05:56:27,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:27,787 INFO L225 Difference]: With dead ends: 3305 [2020-10-27 05:56:27,788 INFO L226 Difference]: Without dead ends: 2352 [2020-10-27 05:56:27,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:56:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2020-10-27 05:56:27,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2349. [2020-10-27 05:56:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-10-27 05:56:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3349 transitions. [2020-10-27 05:56:27,944 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3349 transitions. Word has length 156 [2020-10-27 05:56:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:27,947 INFO L481 AbstractCegarLoop]: Abstraction has 2349 states and 3349 transitions. [2020-10-27 05:56:27,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:56:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3349 transitions. [2020-10-27 05:56:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 05:56:27,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:27,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:56:27,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:56:27,958 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:27,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1188797421, now seen corresponding path program 1 times [2020-10-27 05:56:27,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:27,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077378578] [2020-10-27 05:56:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:28,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:28,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:29,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:30,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:30,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:31,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:33,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:33,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 05:56:33,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:56:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:56:33,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:56:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:56:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 05:56:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:33,637 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:56:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:33,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:33,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:33,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:56:33,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:33,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077378578] [2020-10-27 05:56:33,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:33,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:56:33,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774074668] [2020-10-27 05:56:33,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:56:33,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:33,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:56:33,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:33,755 INFO L87 Difference]: Start difference. First operand 2349 states and 3349 transitions. Second operand 5 states. [2020-10-27 05:56:36,468 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:37,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:37,774 INFO L93 Difference]: Finished difference Result 6654 states and 9479 transitions. [2020-10-27 05:56:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:56:37,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 05:56:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:37,798 INFO L225 Difference]: With dead ends: 6654 [2020-10-27 05:56:37,799 INFO L226 Difference]: Without dead ends: 4539 [2020-10-27 05:56:37,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:56:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2020-10-27 05:56:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4536. [2020-10-27 05:56:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4536 states. [2020-10-27 05:56:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4536 states to 4536 states and 6383 transitions. [2020-10-27 05:56:38,131 INFO L78 Accepts]: Start accepts. Automaton has 4536 states and 6383 transitions. Word has length 157 [2020-10-27 05:56:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:38,131 INFO L481 AbstractCegarLoop]: Abstraction has 4536 states and 6383 transitions. [2020-10-27 05:56:38,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:56:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4536 states and 6383 transitions. [2020-10-27 05:56:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 05:56:38,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:38,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:56:38,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:56:38,142 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:38,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1049828168, now seen corresponding path program 1 times [2020-10-27 05:56:38,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:38,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974712618] [2020-10-27 05:56:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:38,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:38,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:40,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:40,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:42,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:42,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:43,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:43,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 05:56:43,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:56:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:56:43,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:56:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:56:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:56:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:43,775 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:56:43,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:43,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:43,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:43,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:43,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:43,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:56:43,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:43,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:43,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:43,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974712618] [2020-10-27 05:56:43,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:43,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:56:43,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107695143] [2020-10-27 05:56:43,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:56:43,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:43,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:56:43,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:43,883 INFO L87 Difference]: Start difference. First operand 4536 states and 6383 transitions. Second operand 5 states. [2020-10-27 05:56:46,779 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:48,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:48,246 INFO L93 Difference]: Finished difference Result 12062 states and 16982 transitions. [2020-10-27 05:56:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:56:48,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-27 05:56:48,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:48,292 INFO L225 Difference]: With dead ends: 12062 [2020-10-27 05:56:48,293 INFO L226 Difference]: Without dead ends: 8667 [2020-10-27 05:56:48,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:56:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8667 states. [2020-10-27 05:56:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8667 to 8664. [2020-10-27 05:56:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8664 states. [2020-10-27 05:56:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 12002 transitions. [2020-10-27 05:56:49,077 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 12002 transitions. Word has length 158 [2020-10-27 05:56:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:56:49,078 INFO L481 AbstractCegarLoop]: Abstraction has 8664 states and 12002 transitions. [2020-10-27 05:56:49,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:56:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 12002 transitions. [2020-10-27 05:56:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 05:56:49,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:56:49,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:56:49,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:56:49,095 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:56:49,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:56:49,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1801705934, now seen corresponding path program 1 times [2020-10-27 05:56:49,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:56:49,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959037600] [2020-10-27 05:56:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:56:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:54,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:54,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 05:56:54,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:56:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:56:54,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:56:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:56:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 05:56:54,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:54,620 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:56:54,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:56:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:56:54,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:56:54,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:56:54,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:56:54,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:56:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:56:54,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:56:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:56:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:56:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:56:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:56:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:56:54,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959037600] [2020-10-27 05:56:54,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:56:54,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:56:54,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734248770] [2020-10-27 05:56:54,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:56:54,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:56:54,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:56:54,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:56:54,730 INFO L87 Difference]: Start difference. First operand 8664 states and 12002 transitions. Second operand 5 states. [2020-10-27 05:56:57,780 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:56:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:56:59,498 INFO L93 Difference]: Finished difference Result 24414 states and 33748 transitions. [2020-10-27 05:56:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:56:59,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-27 05:56:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:56:59,560 INFO L225 Difference]: With dead ends: 24414 [2020-10-27 05:56:59,561 INFO L226 Difference]: Without dead ends: 16667 [2020-10-27 05:56:59,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:56:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16667 states. [2020-10-27 05:57:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16667 to 16664. [2020-10-27 05:57:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16664 states. [2020-10-27 05:57:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16664 states to 16664 states and 22708 transitions. [2020-10-27 05:57:00,914 INFO L78 Accepts]: Start accepts. Automaton has 16664 states and 22708 transitions. Word has length 159 [2020-10-27 05:57:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:00,915 INFO L481 AbstractCegarLoop]: Abstraction has 16664 states and 22708 transitions. [2020-10-27 05:57:00,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:57:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 16664 states and 22708 transitions. [2020-10-27 05:57:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 05:57:00,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:00,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:57:00,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:57:00,946 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:00,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:00,946 INFO L82 PathProgramCache]: Analyzing trace with hash 807429641, now seen corresponding path program 1 times [2020-10-27 05:57:00,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:00,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054874798] [2020-10-27 05:57:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:01,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:01,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:01,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:04,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:04,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 05:57:04,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:57:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3561 [2020-10-27 05:57:04,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:57:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 05:57:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:57:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:04,970 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:57:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:04,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:04,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:57:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:57:05,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054874798] [2020-10-27 05:57:05,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:05,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:57:05,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471710554] [2020-10-27 05:57:05,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:57:05,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:05,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:57:05,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:57:05,030 INFO L87 Difference]: Start difference. First operand 16664 states and 22708 transitions. Second operand 4 states. [2020-10-27 05:57:05,446 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:57:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:08,675 INFO L93 Difference]: Finished difference Result 31518 states and 44776 transitions. [2020-10-27 05:57:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:57:08,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-27 05:57:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:08,737 INFO L225 Difference]: With dead ends: 31518 [2020-10-27 05:57:08,737 INFO L226 Difference]: Without dead ends: 25307 [2020-10-27 05:57:08,761 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 05:57:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25307 states. [2020-10-27 05:57:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25307 to 25304. [2020-10-27 05:57:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25304 states. [2020-10-27 05:57:10,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25304 states to 25304 states and 34916 transitions. [2020-10-27 05:57:10,736 INFO L78 Accepts]: Start accepts. Automaton has 25304 states and 34916 transitions. Word has length 160 [2020-10-27 05:57:10,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:10,736 INFO L481 AbstractCegarLoop]: Abstraction has 25304 states and 34916 transitions. [2020-10-27 05:57:10,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:57:10,736 INFO L276 IsEmpty]: Start isEmpty. Operand 25304 states and 34916 transitions. [2020-10-27 05:57:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 05:57:10,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:10,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:57:10,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:57:10,778 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash 329470672, now seen corresponding path program 1 times [2020-10-27 05:57:10,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:10,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732258435] [2020-10-27 05:57:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:11,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:11,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 05:57:11,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 05:57:11,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:57:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 05:57:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 05:57:11,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:11,627 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:57:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:11,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:11,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:57:11,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:57:11,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732258435] [2020-10-27 05:57:11,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:11,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:57:11,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154524520] [2020-10-27 05:57:11,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:57:11,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:11,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:57:11,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:57:11,699 INFO L87 Difference]: Start difference. First operand 25304 states and 34916 transitions. Second operand 4 states. [2020-10-27 05:57:12,157 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:57:16,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:16,536 INFO L93 Difference]: Finished difference Result 49938 states and 71592 transitions. [2020-10-27 05:57:16,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:57:16,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-27 05:57:16,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:16,639 INFO L225 Difference]: With dead ends: 49938 [2020-10-27 05:57:16,640 INFO L226 Difference]: Without dead ends: 39983 [2020-10-27 05:57:16,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39983 states. [2020-10-27 05:57:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39983 to 39980. [2020-10-27 05:57:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39980 states. [2020-10-27 05:57:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39980 states to 39980 states and 55620 transitions. [2020-10-27 05:57:19,858 INFO L78 Accepts]: Start accepts. Automaton has 39980 states and 55620 transitions. Word has length 160 [2020-10-27 05:57:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:19,858 INFO L481 AbstractCegarLoop]: Abstraction has 39980 states and 55620 transitions. [2020-10-27 05:57:19,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:57:19,858 INFO L276 IsEmpty]: Start isEmpty. Operand 39980 states and 55620 transitions. [2020-10-27 05:57:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 05:57:19,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:19,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:57:19,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:57:19,893 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:19,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:19,893 INFO L82 PathProgramCache]: Analyzing trace with hash -2127015123, now seen corresponding path program 1 times [2020-10-27 05:57:19,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:19,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50492830] [2020-10-27 05:57:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 05:57:20,082 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 05:57:20,083 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 05:57:20,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:57:20,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:57:20 BoogieIcfgContainer [2020-10-27 05:57:20,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 05:57:20,147 INFO L168 Benchmark]: Toolchain (without parser) took 84410.64 ms. Allocated memory was 151.0 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 124.1 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 839.9 MB. Max. memory is 8.0 GB. [2020-10-27 05:57:20,148 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 05:57:20,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1084.79 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 128.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. [2020-10-27 05:57:20,149 INFO L168 Benchmark]: Boogie Preprocessor took 165.37 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 124.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 05:57:20,150 INFO L168 Benchmark]: RCFGBuilder took 1724.90 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 124.6 MB in the beginning and 103.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 80.1 MB. Max. memory is 8.0 GB. [2020-10-27 05:57:20,151 INFO L168 Benchmark]: TraceAbstraction took 81422.57 ms. Allocated memory was 185.6 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 103.8 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 784.3 MB. Max. memory is 8.0 GB. [2020-10-27 05:57:20,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1084.79 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 128.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 165.37 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 124.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1724.90 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 124.6 MB in the beginning and 103.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 80.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 81422.57 ms. Allocated memory was 185.6 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 103.8 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 784.3 MB. 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; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_2426; [L78] int __return_2551; [L81] int main__c1; [L82] int main__i2; [L83] main__c1 = 0 [L84] ep12 = __VERIFIER_nondet_bool() [L85] ep13 = __VERIFIER_nondet_bool() [L86] ep21 = __VERIFIER_nondet_bool() [L87] ep23 = __VERIFIER_nondet_bool() [L88] ep31 = __VERIFIER_nondet_bool() [L89] ep32 = __VERIFIER_nondet_bool() [L90] id1 = __VERIFIER_nondet_char() [L91] r1 = __VERIFIER_nondet_uchar() [L92] st1 = __VERIFIER_nondet_char() [L93] nl1 = __VERIFIER_nondet_char() [L94] m1 = __VERIFIER_nondet_char() [L95] max1 = __VERIFIER_nondet_char() [L96] mode1 = __VERIFIER_nondet_bool() [L97] newmax1 = __VERIFIER_nondet_bool() [L98] id2 = __VERIFIER_nondet_char() [L99] r2 = __VERIFIER_nondet_uchar() [L100] st2 = __VERIFIER_nondet_char() [L101] nl2 = __VERIFIER_nondet_char() [L102] m2 = __VERIFIER_nondet_char() [L103] max2 = __VERIFIER_nondet_char() [L104] mode2 = __VERIFIER_nondet_bool() [L105] newmax2 = __VERIFIER_nondet_bool() [L106] id3 = __VERIFIER_nondet_char() [L107] r3 = __VERIFIER_nondet_uchar() [L108] st3 = __VERIFIER_nondet_char() [L109] nl3 = __VERIFIER_nondet_char() [L110] m3 = __VERIFIER_nondet_char() [L111] max3 = __VERIFIER_nondet_char() [L112] mode3 = __VERIFIER_nondet_bool() [L113] newmax3 = __VERIFIER_nondet_bool() [L115] _Bool init__r121; [L116] _Bool init__r131; [L117] _Bool init__r211; [L118] _Bool init__r231; [L119] _Bool init__r311; [L120] _Bool init__r321; [L121] _Bool init__r122; [L122] int init__tmp; [L123] _Bool init__r132; [L124] int init__tmp___0; [L125] _Bool init__r212; [L126] int init__tmp___1; [L127] _Bool init__r232; [L128] int init__tmp___2; [L129] _Bool init__r312; [L130] int init__tmp___3; [L131] _Bool init__r322; [L132] int init__tmp___4; [L133] int init__tmp___5; [L134] init__r121 = ep12 [L135] init__r131 = ep13 [L136] init__r211 = ep21 [L137] init__r231 = ep23 [L138] init__r311 = ep31 [L139] init__r321 = ep32 [L140] COND FALSE !(!(init__r121 == 0)) [L2456] COND FALSE !(!(init__r131 == 0)) [L2472] init__tmp = 0 [L144] init__r122 = (_Bool)init__tmp [L145] COND FALSE !(!(init__r131 == 0)) [L2433] COND FALSE !(!(init__r121 == 0)) [L2449] init__tmp___0 = 0 [L149] init__r132 = (_Bool)init__tmp___0 [L150] COND FALSE !(!(init__r211 == 0)) [L2410] COND FALSE !(!(init__r231 == 0)) [L2426] init__tmp___1 = 0 [L154] init__r212 = (_Bool)init__tmp___1 [L155] COND FALSE !(!(init__r231 == 0)) [L2387] COND FALSE !(!(init__r211 == 0)) [L2403] init__tmp___2 = 0 [L159] init__r232 = (_Bool)init__tmp___2 [L160] COND FALSE !(!(init__r311 == 0)) [L2364] COND FALSE !(!(init__r321 == 0)) [L2380] init__tmp___3 = 0 [L164] init__r312 = (_Bool)init__tmp___3 [L165] COND FALSE !(!(init__r321 == 0)) [L2341] COND FALSE !(!(init__r311 == 0)) [L2357] init__tmp___4 = 0 [L169] init__r322 = (_Bool)init__tmp___4 [L170] COND TRUE ((int)id1) != ((int)id2) [L172] COND TRUE ((int)id1) != ((int)id3) [L174] COND TRUE ((int)id2) != ((int)id3) [L176] COND TRUE ((int)id1) >= 0 [L178] COND TRUE ((int)id2) >= 0 [L180] COND TRUE ((int)id3) >= 0 [L182] COND TRUE ((int)r1) == 0 [L184] COND TRUE ((int)r2) == 0 [L186] COND TRUE ((int)r3) == 0 [L188] COND TRUE ((int)max1) == ((int)id1) [L190] COND TRUE ((int)max2) == ((int)id2) [L192] COND TRUE ((int)max3) == ((int)id3) [L194] COND TRUE ((int)st1) == 0 [L196] COND TRUE ((int)st2) == 0 [L198] COND TRUE ((int)st3) == 0 [L200] COND TRUE ((int)nl1) == 0 [L202] COND TRUE ((int)nl2) == 0 [L204] COND TRUE ((int)nl3) == 0 [L206] COND TRUE ((int)mode1) == 0 [L208] COND TRUE ((int)mode2) == 0 [L210] COND TRUE ((int)mode3) == 0 [L212] COND TRUE !(newmax1 == 0) [L214] COND TRUE !(newmax2 == 0) [L216] COND TRUE !(newmax3 == 0) [L218] init__tmp___5 = 1 [L219] __return_1873 = init__tmp___5 [L220] main__i2 = __return_1873 [L221] COND TRUE main__i2 != 0 [L223] p12_old = nomsg [L224] p12_new = nomsg [L225] p13_old = nomsg [L226] p13_new = nomsg [L227] p21_old = nomsg [L228] p21_new = nomsg [L229] p23_old = nomsg [L230] p23_new = nomsg [L231] p31_old = nomsg [L232] p31_new = nomsg [L233] p32_old = nomsg [L234] p32_new = nomsg [L235] main__i2 = 0 [L237] _Bool node1__newmax; [L238] node1__newmax = 0 [L239] COND FALSE !(!(mode1 == 0)) [L245] COND TRUE ((int)r1) < 2 [L247] COND FALSE !(!(ep12 == 0)) [L260] COND FALSE !(!(ep13 == 0)) [L273] mode1 = 1 [L275] _Bool node2__newmax; [L276] node2__newmax = 0 [L277] COND FALSE !(!(mode2 == 0)) [L283] COND TRUE ((int)r2) < 2 [L285] COND FALSE !(!(ep21 == 0)) [L298] COND FALSE !(!(ep23 == 0)) [L311] mode2 = 1 [L313] _Bool node3__newmax; [L314] node3__newmax = 0 [L315] COND FALSE !(!(mode3 == 0)) [L321] COND TRUE ((int)r3) < 2 [L323] COND FALSE !(!(ep31 == 0)) [L336] COND FALSE !(!(ep32 == 0)) [L349] mode3 = 1 [L350] p12_old = p12_new [L351] p12_new = nomsg [L352] p13_old = p13_new [L353] p13_new = nomsg [L354] p21_old = p21_new [L355] p21_new = nomsg [L356] p23_old = p23_new [L357] p23_new = nomsg [L358] p31_old = p31_new [L359] p31_new = nomsg [L360] p32_old = p32_new [L361] p32_new = nomsg [L363] int check__tmp; [L364] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L366] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L368] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L370] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L372] COND FALSE !(((int)r1) >= 2) [L378] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L380] COND TRUE ((int)r1) < 2 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] check__tmp = 1 [L393] __return_2019 = check__tmp [L394] main__c1 = __return_2019 [L396] _Bool __tmp_1; [L397] __tmp_1 = main__c1 [L398] _Bool assert__arg; [L399] assert__arg = __tmp_1 [L400] COND FALSE !(assert__arg == 0) [L407] _Bool node1__newmax; [L408] node1__newmax = 0 [L409] COND TRUE !(mode1 == 0) [L411] COND FALSE !(r1 == 255) [L417] r1 = r1 + 1 [L418] COND FALSE !(!(ep21 == 0)) [L427] COND FALSE !(!(ep31 == 0)) [L436] newmax1 = node1__newmax [L437] COND FALSE !(((int)r1) == 2) [L443] mode1 = 0 [L445] _Bool node2__newmax; [L446] node2__newmax = 0 [L447] COND TRUE !(mode2 == 0) [L449] COND FALSE !(r2 == 255) [L455] r2 = r2 + 1 [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] COND FALSE !(r3 == 255) [L493] r3 = r3 + 1 [L494] COND FALSE !(!(ep13 == 0)) [L503] COND FALSE !(!(ep23 == 0)) [L512] newmax3 = node3__newmax [L513] COND FALSE !(((int)r3) == 2) [L519] mode3 = 0 [L520] p12_old = p12_new [L521] p12_new = nomsg [L522] p13_old = p13_new [L523] p13_new = nomsg [L524] p21_old = p21_new [L525] p21_new = nomsg [L526] p23_old = p23_new [L527] p23_new = nomsg [L528] p31_old = p31_new [L529] p31_new = nomsg [L530] p32_old = p32_new [L531] p32_new = nomsg [L533] int check__tmp; [L534] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L536] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L538] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L540] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L542] COND FALSE !(((int)r1) >= 2) [L548] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L550] COND TRUE ((int)r1) < 2 [L552] COND FALSE !(((int)r1) >= 2) [L558] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L560] COND TRUE ((int)r1) < 2 [L562] check__tmp = 1 [L563] __return_2152 = check__tmp [L564] main__c1 = __return_2152 [L566] _Bool __tmp_2; [L567] __tmp_2 = main__c1 [L568] _Bool assert__arg; [L569] assert__arg = __tmp_2 [L570] COND FALSE !(assert__arg == 0) [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2288 = check__tmp [L734] main__c1 = __return_2288 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L747] _Bool node1__newmax; [L748] node1__newmax = 0 [L749] COND TRUE !(mode1 == 0) [L751] COND FALSE !(r1 == 255) [L757] r1 = r1 + 1 [L758] COND FALSE !(!(ep21 == 0)) [L767] COND FALSE !(!(ep31 == 0)) [L776] newmax1 = node1__newmax [L777] COND TRUE ((int)r1) == 2 [L779] COND TRUE ((int)max1) == ((int)id1) [L781] st1 = 1 [L783] mode1 = 0 [L785] _Bool node2__newmax; [L786] node2__newmax = 0 [L787] COND TRUE !(mode2 == 0) [L789] COND FALSE !(r2 == 255) [L795] r2 = r2 + 1 [L796] COND FALSE !(!(ep12 == 0)) [L805] COND FALSE !(!(ep32 == 0)) [L814] newmax2 = node2__newmax [L815] COND TRUE ((int)r2) == 2 [L817] COND TRUE ((int)max2) == ((int)id2) [L819] st2 = 1 [L821] mode2 = 0 [L823] _Bool node3__newmax; [L824] node3__newmax = 0 [L825] COND TRUE !(mode3 == 0) [L827] COND FALSE !(r3 == 255) [L833] r3 = r3 + 1 [L834] COND FALSE !(!(ep13 == 0)) [L843] COND FALSE !(!(ep23 == 0)) [L852] newmax3 = node3__newmax [L853] COND TRUE ((int)r3) == 2 [L855] COND TRUE ((int)max3) == ((int)id3) [L857] st3 = 1 [L859] mode3 = 0 [L860] p12_old = p12_new [L861] p12_new = nomsg [L862] p13_old = p13_new [L863] p13_new = nomsg [L864] p21_old = p21_new [L865] p21_new = nomsg [L866] p23_old = p23_new [L867] p23_new = nomsg [L868] p31_old = p31_new [L869] p31_new = nomsg [L870] p32_old = p32_new [L871] p32_new = nomsg [L873] int check__tmp; [L874] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1570] check__tmp = 0 [L902] __return_2426 = check__tmp [L903] main__c1 = __return_2426 [L906] _Bool __tmp_4; [L907] __tmp_4 = main__c1 [L908] _Bool assert__arg; [L909] assert__arg = __tmp_4 [L910] COND TRUE assert__arg == 0 [L912] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 351 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 81.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 33.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5918 SDtfs, 6891 SDslu, 3520 SDs, 0 SdLazy, 6461 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39980occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 38.4s InterpolantComputationTime, 1419 NumberOfCodeBlocks, 1419 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1251 ConstructedInterpolants, 0 QuantifiedInterpolants, 1169471 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...