/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/loop-acceleration/nested_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-19 22:14:47,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 22:14:47,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 22:14:47,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 22:14:47,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 22:14:47,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 22:14:47,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 22:14:47,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 22:14:47,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 22:14:47,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 22:14:47,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 22:14:47,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 22:14:47,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 22:14:47,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 22:14:47,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 22:14:47,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 22:14:47,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 22:14:47,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 22:14:47,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 22:14:47,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 22:14:47,949 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 22:14:47,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 22:14:47,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 22:14:47,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 22:14:47,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 22:14:47,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-19 22:14:47,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-19 22:14:47,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-19 22:14:47,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-19 22:14:47,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-19 22:14:47,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-19 22:14:47,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-19 22:14:47,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-19 22:14:47,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-19 22:14:47,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-19 22:14:47,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-19 22:14:47,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-19 22:14:47,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-19 22:14:47,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-19 22:14:47,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 22:14:47,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 22:14:47,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 22:14:47,964 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 [2022-03-19 22:14:47,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 22:14:47,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 22:14:47,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-19 22:14:47,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-19 22:14:47,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 22:14:47,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 22:14:47,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 22:14:47,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 22:14:47,992 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 22:14:47,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 22:14:47,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 22:14:47,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 22:14:47,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 22:14:47,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 22:14:47,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 22:14:47,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 22:14:47,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 22:14:47,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 22:14:47,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 22:14:47,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 22:14:47,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 22:14:47,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 22:14:47,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 22:14:47,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 22:14:47,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:14:47,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 22:14:47,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 22:14:47,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 22:14:47,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 22:14:47,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 22:14:47,996 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-19 22:14:47,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-19 22:14:47,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 22:14:47,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 22:14:48,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 22:14:48,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 22:14:48,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 22:14:48,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 22:14:48,203 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 22:14:48,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/nested_1-2.c [2022-03-19 22:14:48,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/565470dce/e54f49a1557743d2840a7f9690bf40f2/FLAG832a8aac9 [2022-03-19 22:14:48,593 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 22:14:48,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_1-2.c [2022-03-19 22:14:48,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/565470dce/e54f49a1557743d2840a7f9690bf40f2/FLAG832a8aac9 [2022-03-19 22:14:48,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/565470dce/e54f49a1557743d2840a7f9690bf40f2 [2022-03-19 22:14:48,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 22:14:48,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 22:14:48,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 22:14:48,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 22:14:48,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 22:14:48,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34594c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48, skipping insertion in model container [2022-03-19 22:14:48,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 22:14:48,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 22:14:48,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_1-2.c[322,335] [2022-03-19 22:14:48,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:14:48,808 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 22:14:48,817 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_1-2.c[322,335] [2022-03-19 22:14:48,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:14:48,828 INFO L208 MainTranslator]: Completed translation [2022-03-19 22:14:48,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48 WrapperNode [2022-03-19 22:14:48,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 22:14:48,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 22:14:48,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 22:14:48,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 22:14:48,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 22:14:48,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 22:14:48,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 22:14:48,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 22:14:48,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (1/1) ... [2022-03-19 22:14:48,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:14:48,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:14:48,928 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) [2022-03-19 22:14:48,968 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 [2022-03-19 22:14:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 22:14:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 22:14:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 22:14:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 22:14:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 22:14:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 22:14:49,035 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 22:14:49,036 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 22:14:49,117 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 22:14:49,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 22:14:49,120 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-19 22:14:49,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:14:49 BoogieIcfgContainer [2022-03-19 22:14:49,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 22:14:49,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 22:14:49,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 22:14:49,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 22:14:49,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 10:14:48" (1/3) ... [2022-03-19 22:14:49,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514cf397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:14:49, skipping insertion in model container [2022-03-19 22:14:49,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:14:48" (2/3) ... [2022-03-19 22:14:49,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514cf397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:14:49, skipping insertion in model container [2022-03-19 22:14:49,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:14:49" (3/3) ... [2022-03-19 22:14:49,127 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1-2.c [2022-03-19 22:14:49,130 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 22:14:49,130 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 22:14:49,158 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 22:14:49,162 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 [2022-03-19 22:14:49,162 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 22:14:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-03-19 22:14:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-19 22:14:49,175 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:14:49,175 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:14:49,176 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:14:49,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:14:49,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2021311625, now seen corresponding path program 1 times [2022-03-19 22:14:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:14:49,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875878310] [2022-03-19 22:14:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:14:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:14:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:14:49,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:14:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875878310] [2022-03-19 22:14:49,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875878310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:14:49,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:14:49,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 22:14:49,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280211122] [2022-03-19 22:14:49,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:14:49,335 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 22:14:49,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:14:49,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 22:14:49,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 22:14:49,359 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-03-19 22:14:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:14:49,431 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2022-03-19 22:14:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 22:14:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2022-03-19 22:14:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:14:49,436 INFO L225 Difference]: With dead ends: 37 [2022-03-19 22:14:49,436 INFO L226 Difference]: Without dead ends: 17 [2022-03-19 22:14:49,438 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 22:14:49,441 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 22:14:49,442 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 22:14:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-03-19 22:14:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-03-19 22:14:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 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) [2022-03-19 22:14:49,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-03-19 22:14:49,470 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-03-19 22:14:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:14:49,470 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-03-19 22:14:49,471 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-03-19 22:14:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-03-19 22:14:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-19 22:14:49,472 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:14:49,472 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:14:49,472 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 22:14:49,473 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:14:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:14:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2037585725, now seen corresponding path program 1 times [2022-03-19 22:14:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:14:49,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282816580] [2022-03-19 22:14:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:14:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:14:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:14:49,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:14:49,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282816580] [2022-03-19 22:14:49,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282816580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:14:49,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:14:49,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 22:14:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59341706] [2022-03-19 22:14:49,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:14:49,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 22:14:49,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:14:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 22:14:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 22:14:49,562 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-03-19 22:14:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:14:49,596 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-03-19 22:14:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 22:14:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 14 [2022-03-19 22:14:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:14:49,598 INFO L225 Difference]: With dead ends: 24 [2022-03-19 22:14:49,598 INFO L226 Difference]: Without dead ends: 16 [2022-03-19 22:14:49,598 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 22:14:49,599 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 22:14:49,600 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 22:14:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-19 22:14:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-19 22:14:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 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) [2022-03-19 22:14:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-03-19 22:14:49,603 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2022-03-19 22:14:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:14:49,603 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-03-19 22:14:49,603 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-03-19 22:14:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-03-19 22:14:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-19 22:14:49,604 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:14:49,604 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:14:49,604 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 22:14:49,604 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:14:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:14:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash -183414982, now seen corresponding path program 1 times [2022-03-19 22:14:49,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:14:49,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824882308] [2022-03-19 22:14:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:49,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:14:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:14:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:14:49,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:14:49,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824882308] [2022-03-19 22:14:49,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824882308] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:14:49,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839154355] [2022-03-19 22:14:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:49,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:14:49,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:14:49,714 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) [2022-03-19 22:14:49,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 22:14:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:49,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 22:14:49,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:14:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:14:49,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:14:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:14:49,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839154355] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:14:49,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:14:49,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-19 22:14:49,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394321363] [2022-03-19 22:14:49,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:14:49,890 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 22:14:49,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:14:49,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 22:14:49,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-19 22:14:49,891 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-03-19 22:14:49,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:14:49,951 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-03-19 22:14:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 22:14:49,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 15 [2022-03-19 22:14:49,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:14:49,952 INFO L225 Difference]: With dead ends: 28 [2022-03-19 22:14:49,952 INFO L226 Difference]: Without dead ends: 19 [2022-03-19 22:14:49,953 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-19 22:14:49,954 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 22:14:49,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 22:14:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-03-19 22:14:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-03-19 22:14:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 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) [2022-03-19 22:14:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-03-19 22:14:49,958 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2022-03-19 22:14:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:14:49,958 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-03-19 22:14:49,958 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-03-19 22:14:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-03-19 22:14:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-19 22:14:49,959 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:14:49,959 INFO L499 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:14:49,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-19 22:14:50,176 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 [2022-03-19 22:14:50,177 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:14:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:14:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash 934170243, now seen corresponding path program 2 times [2022-03-19 22:14:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:14:50,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421564383] [2022-03-19 22:14:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:14:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:14:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:14:50,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:14:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421564383] [2022-03-19 22:14:50,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421564383] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:14:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981935009] [2022-03-19 22:14:50,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 22:14:50,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:14:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:14:50,312 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) [2022-03-19 22:14:50,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 22:14:50,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 22:14:50,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:14:50,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-19 22:14:50,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:14:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 22:14:50,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:14:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 22:14:50,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981935009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:14:50,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:14:50,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 16 [2022-03-19 22:14:50,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772567885] [2022-03-19 22:14:50,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:14:50,567 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 22:14:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:14:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 22:14:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-03-19 22:14:50,568 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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) [2022-03-19 22:14:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:14:51,020 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-03-19 22:14:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-19 22:14:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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 18 [2022-03-19 22:14:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:14:51,021 INFO L225 Difference]: With dead ends: 56 [2022-03-19 22:14:51,021 INFO L226 Difference]: Without dead ends: 44 [2022-03-19 22:14:51,022 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=392, Invalid=1248, Unknown=0, NotChecked=0, Total=1640 [2022-03-19 22:14:51,023 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 22:14:51,023 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 65 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 22:14:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-19 22:14:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-19 22:14:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 3 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) [2022-03-19 22:14:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-03-19 22:14:51,032 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 18 [2022-03-19 22:14:51,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:14:51,033 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-03-19 22:14:51,033 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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) [2022-03-19 22:14:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-03-19 22:14:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-19 22:14:51,034 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:14:51,034 INFO L499 BasicCegarLoop]: trace histogram [20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:14:51,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-19 22:14:51,251 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 [2022-03-19 22:14:51,252 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:14:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:14:51,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1395208781, now seen corresponding path program 3 times [2022-03-19 22:14:51,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:14:51,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932352609] [2022-03-19 22:14:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:51,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:14:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:51,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:14:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-03-19 22:14:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:14:51,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932352609] [2022-03-19 22:14:51,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932352609] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:14:51,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751575662] [2022-03-19 22:14:51,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-19 22:14:51,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:14:51,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:14:51,388 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) [2022-03-19 22:14:51,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 22:14:51,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-19 22:14:51,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:14:51,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-19 22:14:51,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:14:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 115 proven. 15 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 22:14:51,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:14:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 115 proven. 15 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-19 22:14:51,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751575662] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:14:51,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:14:51,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-03-19 22:14:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856059018] [2022-03-19 22:14:51,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:14:51,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 22:14:51,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:14:51,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 22:14:51,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-03-19 22:14:51,677 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 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) [2022-03-19 22:14:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:14:51,901 INFO L93 Difference]: Finished difference Result 95 states and 122 transitions. [2022-03-19 22:14:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 22:14:51,902 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 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 43 [2022-03-19 22:14:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:14:51,902 INFO L225 Difference]: With dead ends: 95 [2022-03-19 22:14:51,902 INFO L226 Difference]: Without dead ends: 64 [2022-03-19 22:14:51,903 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2022-03-19 22:14:51,904 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 22:14:51,904 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 22:14:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-19 22:14:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-03-19 22:14:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 3 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) [2022-03-19 22:14:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2022-03-19 22:14:51,924 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 43 [2022-03-19 22:14:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:14:51,924 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2022-03-19 22:14:51,924 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 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) [2022-03-19 22:14:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2022-03-19 22:14:51,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 22:14:51,926 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:14:51,926 INFO L499 BasicCegarLoop]: trace histogram [40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:14:51,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 22:14:52,132 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 [2022-03-19 22:14:52,133 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:14:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:14:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash 538347785, now seen corresponding path program 4 times [2022-03-19 22:14:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:14:52,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595847073] [2022-03-19 22:14:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:14:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:14:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-03-19 22:14:52,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:14:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595847073] [2022-03-19 22:14:52,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595847073] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:14:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573415119] [2022-03-19 22:14:52,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 22:14:52,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:14:52,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:14:52,267 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) [2022-03-19 22:14:52,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 22:14:52,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 22:14:52,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:14:52,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-19 22:14:52,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:14:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-03-19 22:14:52,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:14:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-03-19 22:14:52,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573415119] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:14:52,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:14:52,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 13 [2022-03-19 22:14:52,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161617316] [2022-03-19 22:14:52,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:14:52,677 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 22:14:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:14:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 22:14:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 22:14:52,678 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:14:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:14:52,847 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2022-03-19 22:14:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 22:14:52,847 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2022-03-19 22:14:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:14:52,851 INFO L225 Difference]: With dead ends: 110 [2022-03-19 22:14:52,851 INFO L226 Difference]: Without dead ends: 102 [2022-03-19 22:14:52,851 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-03-19 22:14:52,853 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 22:14:52,853 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 63 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 22:14:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-03-19 22:14:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 77. [2022-03-19 22:14:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 72 states have internal predecessors, (78), 3 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) [2022-03-19 22:14:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2022-03-19 22:14:52,881 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 63 [2022-03-19 22:14:52,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:14:52,883 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2022-03-19 22:14:52,883 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:14:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2022-03-19 22:14:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-19 22:14:52,885 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:14:52,885 INFO L499 BasicCegarLoop]: trace histogram [50, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:14:52,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-19 22:14:53,113 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 [2022-03-19 22:14:53,113 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:14:53,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:14:53,114 INFO L85 PathProgramCache]: Analyzing trace with hash -445755741, now seen corresponding path program 5 times [2022-03-19 22:14:53,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:14:53,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385751122] [2022-03-19 22:14:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:53,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:14:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:14:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-03-19 22:14:53,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:14:53,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385751122] [2022-03-19 22:14:53,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385751122] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:14:53,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479947964] [2022-03-19 22:14:53,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-19 22:14:53,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:14:53,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:14:53,252 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) [2022-03-19 22:14:53,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-19 22:14:54,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-03-19 22:14:54,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:14:54,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-19 22:14:54,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:14:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-03-19 22:14:54,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:14:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-03-19 22:14:54,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479947964] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:14:54,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:14:54,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-03-19 22:14:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608532261] [2022-03-19 22:14:54,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:14:54,414 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 22:14:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:14:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 22:14:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-03-19 22:14:54,414 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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) [2022-03-19 22:14:55,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:14:55,121 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2022-03-19 22:14:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 22:14:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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 76 [2022-03-19 22:14:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:14:55,122 INFO L225 Difference]: With dead ends: 186 [2022-03-19 22:14:55,122 INFO L226 Difference]: Without dead ends: 181 [2022-03-19 22:14:55,123 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=233, Invalid=523, Unknown=0, NotChecked=0, Total=756 [2022-03-19 22:14:55,123 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 81 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 22:14:55,124 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 60 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 22:14:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-03-19 22:14:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-03-19 22:14:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 176 states have (on average 1.0795454545454546) internal successors, (190), 176 states have internal predecessors, (190), 3 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) [2022-03-19 22:14:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2022-03-19 22:14:55,149 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 76 [2022-03-19 22:14:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:14:55,149 INFO L478 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2022-03-19 22:14:55,149 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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) [2022-03-19 22:14:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2022-03-19 22:14:55,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-03-19 22:14:55,151 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:14:55,151 INFO L499 BasicCegarLoop]: trace histogram [130, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:14:55,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-19 22:14:55,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:14:55,357 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:14:55,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:14:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash -318167645, now seen corresponding path program 6 times [2022-03-19 22:14:55,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:14:55,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130736255] [2022-03-19 22:14:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:14:55,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:14:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:14:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:14:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10322 backedges. 0 proven. 9607 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-03-19 22:14:55,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:14:55,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130736255] [2022-03-19 22:14:55,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130736255] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:14:55,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469538298] [2022-03-19 22:14:55,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 22:14:55,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:14:55,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:14:55,657 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:14:55,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-19 22:15:01,465 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2022-03-19 22:15:01,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:15:01,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-19 22:15:01,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:15:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10322 backedges. 0 proven. 9607 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-03-19 22:15:02,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:15:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10322 backedges. 0 proven. 9607 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-03-19 22:15:02,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469538298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:15:02,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:15:02,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 32 [2022-03-19 22:15:02,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028586191] [2022-03-19 22:15:02,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:15:02,714 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-19 22:15:02,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:15:02,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-19 22:15:02,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=707, Unknown=0, NotChecked=0, Total=992 [2022-03-19 22:15:02,715 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand has 32 states, 32 states have (on average 3.625) internal successors, (116), 31 states have internal predecessors, (116), 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) [2022-03-19 22:15:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:15:13,674 INFO L93 Difference]: Finished difference Result 394 states and 430 transitions. [2022-03-19 22:15:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-19 22:15:13,675 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.625) internal successors, (116), 31 states have internal predecessors, (116), 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 180 [2022-03-19 22:15:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:15:13,676 INFO L225 Difference]: With dead ends: 394 [2022-03-19 22:15:13,676 INFO L226 Difference]: Without dead ends: 389 [2022-03-19 22:15:13,678 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=985, Invalid=2555, Unknown=0, NotChecked=0, Total=3540 [2022-03-19 22:15:13,678 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 219 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 22:15:13,679 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 116 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 22:15:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-19 22:15:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2022-03-19 22:15:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 384 states have (on average 1.078125) internal successors, (414), 384 states have internal predecessors, (414), 3 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) [2022-03-19 22:15:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 418 transitions. [2022-03-19 22:15:13,734 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 418 transitions. Word has length 180 [2022-03-19 22:15:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:15:13,735 INFO L478 AbstractCegarLoop]: Abstraction has 389 states and 418 transitions. [2022-03-19 22:15:13,735 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.625) internal successors, (116), 31 states have internal predecessors, (116), 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) [2022-03-19 22:15:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 418 transitions. [2022-03-19 22:15:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-03-19 22:15:13,744 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:15:13,744 INFO L499 BasicCegarLoop]: trace histogram [290, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:15:13,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-19 22:15:13,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:15:13,952 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:15:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:15:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1293036637, now seen corresponding path program 7 times [2022-03-19 22:15:13,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:15:13,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253793255] [2022-03-19 22:15:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:15:13,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:15:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:15:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:15:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:15:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 51562 backedges. 0 proven. 49967 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2022-03-19 22:15:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:15:14,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253793255] [2022-03-19 22:15:14,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253793255] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:15:14,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575470174] [2022-03-19 22:15:14,757 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-19 22:15:14,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:15:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:15:14,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:15:14,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-19 22:15:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:15:15,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-19 22:15:15,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:15:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 51562 backedges. 0 proven. 49967 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2022-03-19 22:15:16,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:15:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 51562 backedges. 0 proven. 49967 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2022-03-19 22:15:18,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575470174] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:15:18,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:15:18,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 64 [2022-03-19 22:15:18,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160277124] [2022-03-19 22:15:18,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:15:18,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-19 22:15:18,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:15:18,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-19 22:15:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=2947, Unknown=0, NotChecked=0, Total=4032 [2022-03-19 22:15:18,406 INFO L87 Difference]: Start difference. First operand 389 states and 418 transitions. Second operand has 64 states, 64 states have (on average 3.8125) internal successors, (244), 63 states have internal predecessors, (244), 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) [2022-03-19 22:15:35,103 WARN L232 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 128 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-19 22:21:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:21:18,246 INFO L93 Difference]: Finished difference Result 810 states and 886 transitions. [2022-03-19 22:21:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-19 22:21:18,246 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.8125) internal successors, (244), 63 states have internal predecessors, (244), 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 388 [2022-03-19 22:21:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:21:18,249 INFO L225 Difference]: With dead ends: 810 [2022-03-19 22:21:18,249 INFO L226 Difference]: Without dead ends: 805 [2022-03-19 22:21:18,252 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 747 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 359.9s TimeCoverageRelationStatistics Valid=4012, Invalid=11225, Unknown=15, NotChecked=0, Total=15252 [2022-03-19 22:21:18,252 INFO L913 BasicCegarLoop]: 71 mSDtfsCounter, 453 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 22:21:18,252 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 223 Invalid, 4014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3866 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 22:21:18,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-03-19 22:21:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-03-19 22:21:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 800 states have (on average 1.0775) internal successors, (862), 800 states have internal predecessors, (862), 3 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) [2022-03-19 22:21:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 866 transitions. [2022-03-19 22:21:18,318 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 866 transitions. Word has length 388 [2022-03-19 22:21:18,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:21:18,318 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 866 transitions. [2022-03-19 22:21:18,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.8125) internal successors, (244), 63 states have internal predecessors, (244), 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) [2022-03-19 22:21:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 866 transitions. [2022-03-19 22:21:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2022-03-19 22:21:18,330 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:21:18,330 INFO L499 BasicCegarLoop]: trace histogram [610, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:21:18,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-19 22:21:18,541 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:21:18,542 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:21:18,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:21:18,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1116524637, now seen corresponding path program 8 times [2022-03-19 22:21:18,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:21:18,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279968464] [2022-03-19 22:21:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:21:18,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:21:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:21:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:21:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:21:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 228506 backedges. 0 proven. 225151 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2022-03-19 22:21:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:21:21,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279968464] [2022-03-19 22:21:21,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279968464] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:21:21,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669886363] [2022-03-19 22:21:21,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 22:21:21,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:21:21,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:21:21,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:21:21,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-19 22:21:22,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 22:21:22,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:21:22,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-19 22:21:22,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:21:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 228506 backedges. 0 proven. 225151 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2022-03-19 22:21:25,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:21:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 228506 backedges. 0 proven. 225151 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2022-03-19 22:21:31,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669886363] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:21:31,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:21:31,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 128 [2022-03-19 22:21:31,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28203790] [2022-03-19 22:21:31,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:21:31,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-03-19 22:21:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:21:31,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-03-19 22:21:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4221, Invalid=12035, Unknown=0, NotChecked=0, Total=16256 [2022-03-19 22:21:31,458 INFO L87 Difference]: Start difference. First operand 805 states and 866 transitions. Second operand has 128 states, 128 states have (on average 3.90625) internal successors, (500), 127 states have internal predecessors, (500), 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) [2022-03-19 22:23:55,567 WARN L232 SmtUtils]: Spent 36.06s on a formula simplification. DAG size of input: 256 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-19 22:23:57,585 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 25 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 43 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 29 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 27) 4294967296) 268435455) (< (mod (+ 47 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 13 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 41 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 3 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 53 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 15 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 49 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 55 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 9 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 37) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 59 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 5 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 33 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 60 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 39 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 7 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 19 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 17 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 23 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 11) 4294967296) 268435455) (< (mod (+ 31 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 57 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ c_main_~x~0 1) 4294967296) 268435455) (< (mod (+ 45 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 51 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-03-19 22:23:59,599 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 25 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 43 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 29 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 27) 4294967296) 268435455) (< (mod (+ 47 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 13 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 41 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 3 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 53 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 15 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 49 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 55 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 9 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 37) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 59 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 5 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 33 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 60 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 39 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 7 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 19 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 17 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 23 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 11) 4294967296) 268435455) (< (mod (+ 31 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 57 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 1) 4294967296) 268435455) (< (mod (+ 45 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 51 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-03-19 22:25:45,301 WARN L232 SmtUtils]: Spent 31.72s on a formula simplification. DAG size of input: 242 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-19 22:25:47,314 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 25 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 43 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 29 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 27) 4294967296) 268435455) (< (mod (+ 47 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 13 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 41 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 3 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 53 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 15 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 49 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 55 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 9 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 37) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 59 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 5 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 33 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 39 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 7 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 19 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 17 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 23 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 11) 4294967296) 268435455) (< (mod (+ 31 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 57 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ c_main_~x~0 1) 4294967296) 268435455) (< (mod (+ 45 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 51 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-03-19 22:25:49,326 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 25 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 43 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 29 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 27) 4294967296) 268435455) (< (mod (+ 47 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 13 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 41 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 3 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 53 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 15 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 49 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 55 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 9 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 37) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 59 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 5 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 33 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 39 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 7 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 19 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 17 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 23 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 11) 4294967296) 268435455) (< (mod (+ 31 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 57 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 1) 4294967296) 268435455) (< (mod (+ 45 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 51 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-03-19 22:25:51,357 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 25 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 43 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 29 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 27) 4294967296) 268435455) (< (mod (+ 47 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 13 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 41 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 3 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 53 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 15 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 49 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod c_main_~x~0 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 55 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 9 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 37) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 5 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 33 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 39 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 7 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 19 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 17 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 23 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 11) 4294967296) 268435455) (< (mod (+ 31 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 57 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 1) 4294967296) 268435455) (< (mod (+ 45 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 51 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-03-19 22:25:53,369 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~x~0 24) 4294967296) 268435455) (< (mod (+ 20 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 6 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 54) 4294967296) 268435455) (< (mod (+ 25 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 43 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 14 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 29 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 52 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 48 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 27) 4294967296) 268435455) (< (mod (+ 47 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 38 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 56 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 13 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 4 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 34 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 41 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 3 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 53 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 15 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 49 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 58 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 30 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 18 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 28 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 32 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 55 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 9 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 37) 4294967296) 268435455) (< (mod (+ 42 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 5 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 44 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 33 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 16 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 39 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 7 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 19 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 8 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 26 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 50) 4294967296) 268435455) (< (mod (+ 17 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 23 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 46 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 10 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 11) 4294967296) 268435455) (< (mod (+ 31 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 12 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 57 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 36 c_main_~x~0) 4294967296) 268435455) (< (mod (+ c_main_~x~0 1) 4294967296) 268435455) (< (mod (+ 45 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 51 c_main_~x~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~x~0) 4294967296) 268435455)) is different from false [2022-03-19 22:27:36,517 WARN L232 SmtUtils]: Spent 24.68s on a formula simplification. DAG size of input: 234 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-19 22:29:24,773 WARN L232 SmtUtils]: Spent 28.26s on a formula simplification. DAG size of input: 240 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)