/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 12:53:22,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 12:53:22,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 12:53:22,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 12:53:22,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 12:53:22,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 12:53:22,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 12:53:22,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 12:53:22,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 12:53:22,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 12:53:22,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 12:53:22,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 12:53:22,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 12:53:22,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 12:53:22,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 12:53:22,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 12:53:22,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 12:53:22,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 12:53:22,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 12:53:22,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 12:53:22,861 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 12:53:22,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 12:53:22,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 12:53:22,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 12:53:22,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 12:53:22,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 12:53:22,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 12:53:22,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 12:53:22,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 12:53:22,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 12:53:22,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 12:53:22,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 12:53:22,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 12:53:22,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 12:53:22,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 12:53:22,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 12:53:22,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 12:53:22,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 12:53:22,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 12:53:22,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 12:53:22,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 12:53:22,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 12:53:22,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 12:53:22,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 12:53:22,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 12:53:22,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 12:53:22,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 12:53:22,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 12:53:22,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 12:53:22,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 12:53:22,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 12:53:22,888 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 12:53:22,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 12:53:22,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 12:53:22,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 12:53:22,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 12:53:22,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:53:22,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 12:53:22,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 12:53:22,892 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 12:53:23,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 12:53:23,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 12:53:23,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 12:53:23,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 12:53:23,091 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 12:53:23,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-2.c [2022-03-18 12:53:23,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfece0aa/923fdc7818914ed38ad186338294678e/FLAG87f5f31ed [2022-03-18 12:53:23,426 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 12:53:23,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c [2022-03-18 12:53:23,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfece0aa/923fdc7818914ed38ad186338294678e/FLAG87f5f31ed [2022-03-18 12:53:23,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfece0aa/923fdc7818914ed38ad186338294678e [2022-03-18 12:53:23,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 12:53:23,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 12:53:23,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 12:53:23,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 12:53:23,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 12:53:23,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:53:23" (1/1) ... [2022-03-18 12:53:23,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40722925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:23, skipping insertion in model container [2022-03-18 12:53:23,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:53:23" (1/1) ... [2022-03-18 12:53:23,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 12:53:23,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 12:53:23,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c[321,334] [2022-03-18 12:53:23,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:53:24,003 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 12:53:24,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c[321,334] [2022-03-18 12:53:24,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:53:24,020 INFO L208 MainTranslator]: Completed translation [2022-03-18 12:53:24,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24 WrapperNode [2022-03-18 12:53:24,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 12:53:24,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 12:53:24,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 12:53:24,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 12:53:24,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (1/1) ... [2022-03-18 12:53:24,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (1/1) ... [2022-03-18 12:53:24,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (1/1) ... [2022-03-18 12:53:24,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (1/1) ... [2022-03-18 12:53:24,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (1/1) ... [2022-03-18 12:53:24,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (1/1) ... [2022-03-18 12:53:24,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (1/1) ... [2022-03-18 12:53:24,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 12:53:24,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 12:53:24,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 12:53:24,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 12:53:24,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (1/1) ... [2022-03-18 12:53:24,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:53:24,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:53:24,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 12:53:24,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 12:53:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 12:53:24,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 12:53:24,111 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 12:53:24,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 12:53:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 12:53:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 12:53:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 12:53:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 12:53:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 12:53:24,158 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 12:53:24,159 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 12:53:24,231 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 12:53:24,235 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 12:53:24,235 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-03-18 12:53:24,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:53:24 BoogieIcfgContainer [2022-03-18 12:53:24,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 12:53:24,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 12:53:24,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 12:53:24,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 12:53:24,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:53:23" (1/3) ... [2022-03-18 12:53:24,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fce839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:53:24, skipping insertion in model container [2022-03-18 12:53:24,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:53:24" (2/3) ... [2022-03-18 12:53:24,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fce839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:53:24, skipping insertion in model container [2022-03-18 12:53:24,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:53:24" (3/3) ... [2022-03-18 12:53:24,241 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-2.c [2022-03-18 12:53:24,244 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 12:53:24,244 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 12:53:24,272 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 12:53:24,278 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 12:53:24,278 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 12:53:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:53:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-18 12:53:24,292 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:53:24,292 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:53:24,293 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:53:24,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:53:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash -531959740, now seen corresponding path program 1 times [2022-03-18 12:53:24,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:53:24,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855094362] [2022-03-18 12:53:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:53:24,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:53:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:53:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:24,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:53:24,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855094362] [2022-03-18 12:53:24,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855094362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:53:24,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:53:24,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 12:53:24,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137668220] [2022-03-18 12:53:24,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:53:24,407 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 12:53:24,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:53:24,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 12:53:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 12:53:24,429 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:53:24,455 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2022-03-18 12:53:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 12:53:24,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-18 12:53:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:53:24,464 INFO L225 Difference]: With dead ends: 50 [2022-03-18 12:53:24,464 INFO L226 Difference]: Without dead ends: 23 [2022-03-18 12:53:24,466 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 12:53:24,468 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:53:24,469 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:53:24,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-18 12:53:24,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-18 12:53:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:53:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-03-18 12:53:24,496 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2022-03-18 12:53:24,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:53:24,497 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-03-18 12:53:24,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-03-18 12:53:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-18 12:53:24,511 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:53:24,511 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:53:24,511 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 12:53:24,511 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:53:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:53:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -537500866, now seen corresponding path program 1 times [2022-03-18 12:53:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:53:24,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598084500] [2022-03-18 12:53:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:53:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:53:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:24,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:53:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:24,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:53:24,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598084500] [2022-03-18 12:53:24,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598084500] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:53:24,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:53:24,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 12:53:24,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59514848] [2022-03-18 12:53:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:53:24,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 12:53:24,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:53:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 12:53:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 12:53:24,619 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:53:24,669 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2022-03-18 12:53:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 12:53:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-18 12:53:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:53:24,670 INFO L225 Difference]: With dead ends: 49 [2022-03-18 12:53:24,670 INFO L226 Difference]: Without dead ends: 32 [2022-03-18 12:53:24,671 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 12:53:24,672 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:53:24,672 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 31 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:53:24,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-18 12:53:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2022-03-18 12:53:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:53:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-03-18 12:53:24,677 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2022-03-18 12:53:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:53:24,677 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-03-18 12:53:24,678 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-03-18 12:53:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 12:53:24,678 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:53:24,678 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:53:24,678 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 12:53:24,679 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:53:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:53:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash -509289700, now seen corresponding path program 1 times [2022-03-18 12:53:24,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:53:24,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762209257] [2022-03-18 12:53:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:53:24,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:53:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:24,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:53:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:24,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:53:24,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762209257] [2022-03-18 12:53:24,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762209257] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:53:24,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004559687] [2022-03-18 12:53:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:53:24,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:53:24,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:53:24,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:53:24,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 12:53:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:24,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 12:53:24,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:53:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:24,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:53:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:24,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004559687] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:53:24,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:53:24,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-18 12:53:24,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208163114] [2022-03-18 12:53:24,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:53:24,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 12:53:24,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:53:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 12:53:24,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-18 12:53:24,940 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:53:25,101 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-03-18 12:53:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 12:53:25,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 12:53:25,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:53:25,102 INFO L225 Difference]: With dead ends: 55 [2022-03-18 12:53:25,102 INFO L226 Difference]: Without dead ends: 37 [2022-03-18 12:53:25,103 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-18 12:53:25,104 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 57 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:53:25,104 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 36 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:53:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-18 12:53:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-03-18 12:53:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:53:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-03-18 12:53:25,109 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 17 [2022-03-18 12:53:25,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:53:25,109 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-03-18 12:53:25,109 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:25,109 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-03-18 12:53:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-18 12:53:25,110 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:53:25,110 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:53:25,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 12:53:25,323 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:53:25,324 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:53:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:53:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1312242250, now seen corresponding path program 2 times [2022-03-18 12:53:25,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:53:25,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167977694] [2022-03-18 12:53:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:53:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:53:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:25,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:53:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:25,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:53:25,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167977694] [2022-03-18 12:53:25,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167977694] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:53:25,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734840756] [2022-03-18 12:53:25,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:53:25,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:53:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:53:25,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:53:25,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 12:53:25,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:53:25,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:53:25,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 12:53:25,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:53:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:25,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:53:25,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:25,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734840756] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:53:25,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:53:25,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-18 12:53:25,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313753863] [2022-03-18 12:53:25,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:53:25,686 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 12:53:25,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:53:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 12:53:25,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-18 12:53:25,691 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:53:26,066 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2022-03-18 12:53:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 12:53:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-03-18 12:53:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:53:26,068 INFO L225 Difference]: With dead ends: 73 [2022-03-18 12:53:26,068 INFO L226 Difference]: Without dead ends: 49 [2022-03-18 12:53:26,068 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2022-03-18 12:53:26,069 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 85 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:53:26,069 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 51 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:53:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-18 12:53:26,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-03-18 12:53:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:53:26,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-03-18 12:53:26,074 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2022-03-18 12:53:26,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:53:26,075 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-03-18 12:53:26,075 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-03-18 12:53:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-18 12:53:26,076 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:53:26,076 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:53:26,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 12:53:26,276 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-18 12:53:26,276 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:53:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:53:26,277 INFO L85 PathProgramCache]: Analyzing trace with hash -759453590, now seen corresponding path program 3 times [2022-03-18 12:53:26,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:53:26,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409258303] [2022-03-18 12:53:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:53:26,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:53:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:53:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:53:26,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409258303] [2022-03-18 12:53:26,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409258303] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:53:26,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319301192] [2022-03-18 12:53:26,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:53:26,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:53:26,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:53:26,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:53:26,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 12:53:26,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-03-18 12:53:26,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:53:26,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 12:53:26,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:53:26,639 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:26,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:53:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:26,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319301192] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:53:26,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:53:26,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-03-18 12:53:26,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553445019] [2022-03-18 12:53:26,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:53:26,898 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-18 12:53:26,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:53:26,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-18 12:53:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2022-03-18 12:53:26,899 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:53:30,139 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2022-03-18 12:53:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-18 12:53:30,140 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-18 12:53:30,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:53:30,140 INFO L225 Difference]: With dead ends: 109 [2022-03-18 12:53:30,140 INFO L226 Difference]: Without dead ends: 73 [2022-03-18 12:53:30,141 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=643, Invalid=1613, Unknown=0, NotChecked=0, Total=2256 [2022-03-18 12:53:30,142 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 128 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:53:30,142 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 81 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:53:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-03-18 12:53:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-03-18 12:53:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:53:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-03-18 12:53:30,151 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 35 [2022-03-18 12:53:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:53:30,151 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-03-18 12:53:30,151 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:53:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-03-18 12:53:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 12:53:30,152 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:53:30,152 INFO L500 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:53:30,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 12:53:30,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:53:30,371 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:53:30,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:53:30,372 INFO L85 PathProgramCache]: Analyzing trace with hash -110156846, now seen corresponding path program 4 times [2022-03-18 12:53:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:53:30,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302822753] [2022-03-18 12:53:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:53:30,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:53:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:30,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:53:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:53:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:30,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:53:30,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302822753] [2022-03-18 12:53:30,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302822753] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:53:30,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919994793] [2022-03-18 12:53:30,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:53:30,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:53:30,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:53:30,772 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:53:30,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 12:53:30,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:53:30,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:53:30,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-18 12:53:30,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:53:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:31,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:53:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:53:31,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919994793] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:53:31,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:53:31,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-03-18 12:53:31,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493549574] [2022-03-18 12:53:31,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:53:31,872 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-18 12:53:31,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:53:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-18 12:53:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-03-18 12:53:31,873 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:55:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:55:25,461 INFO L93 Difference]: Finished difference Result 181 states and 216 transitions. [2022-03-18 12:55:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-18 12:55:25,461 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-03-18 12:55:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:55:25,462 INFO L225 Difference]: With dead ends: 181 [2022-03-18 12:55:25,462 INFO L226 Difference]: Without dead ends: 121 [2022-03-18 12:55:25,465 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 113.8s TimeCoverageRelationStatistics Valid=2437, Invalid=6676, Unknown=7, NotChecked=0, Total=9120 [2022-03-18 12:55:25,465 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 221 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:55:25,465 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 141 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:55:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-03-18 12:55:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2022-03-18 12:55:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:55:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2022-03-18 12:55:25,474 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 59 [2022-03-18 12:55:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:55:25,474 INFO L478 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2022-03-18 12:55:25,474 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:55:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2022-03-18 12:55:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-18 12:55:25,476 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:55:25,476 INFO L500 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:55:25,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 12:55:25,679 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:55:25,679 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:55:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:55:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1588006238, now seen corresponding path program 5 times [2022-03-18 12:55:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:55:25,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505301046] [2022-03-18 12:55:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:55:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:55:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:55:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:55:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:55:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:55:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:55:26,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505301046] [2022-03-18 12:55:26,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505301046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:55:26,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123246720] [2022-03-18 12:55:26,756 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:55:26,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:55:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:55:26,763 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:55:26,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 12:57:42,211 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-03-18 12:57:42,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:57:42,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 95 conjunts are in the unsatisfiable core [2022-03-18 12:57:42,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:57:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:57:42,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:57:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:57:45,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123246720] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:57:45,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:57:45,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-03-18 12:57:45,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270161395] [2022-03-18 12:57:45,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:57:45,880 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-03-18 12:57:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:57:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-03-18 12:57:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2496, Invalid=7010, Unknown=0, NotChecked=0, Total=9506 [2022-03-18 12:57:45,882 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 97 states have internal predecessors, (200), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:58:46,172 WARN L232 SmtUtils]: Spent 16.28s on a formula simplification. DAG size of input: 196 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 12:58:48,184 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ 44 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-18 12:58:50,204 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ 44 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-18 12:59:56,011 WARN L232 SmtUtils]: Spent 16.63s on a formula simplification. DAG size of input: 182 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 13:00:41,592 WARN L232 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 188 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 13:00:43,607 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 42 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-18 13:01:44,067 WARN L232 SmtUtils]: Spent 11.64s on a formula simplification. DAG size of input: 176 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 13:02:38,022 WARN L232 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 180 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 13:02:40,065 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-18 13:03:36,268 WARN L232 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 168 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 13:04:26,720 WARN L232 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 172 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 13:05:31,074 WARN L232 SmtUtils]: Spent 9.52s on a formula simplification. DAG size of input: 168 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 13:06:25,323 WARN L232 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 164 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 13:07:16,900 WARN L232 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 160 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)