/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:23:24,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:23:24,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:23:24,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 02:23:24,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:23:24,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:23:24,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:23:24,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:23:24,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:23:24,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:23:24,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:23:24,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:23:24,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:23:24,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:23:24,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:23:24,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:23:24,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:23:24,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:23:24,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:23:24,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:23:24,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:23:24,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:23:24,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:23:24,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:23:24,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:23:24,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:23:24,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:23:24,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:23:24,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:23:24,160 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:23:24,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:23:24,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:23:24,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:23:24,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:23:24,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:23:24,162 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:23:24,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:23:24,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:23:24,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:23:24,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:23:24,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:23:24,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:23:24,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:23:24,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:23:24,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:23:24,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:23:24,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:23:24,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:23:24,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:23:24,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:23:24,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:23:24,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:23:24,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:23:24,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:23:24,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:23:24,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:23:24,169 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:23:24,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:23:24,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:23:24,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:23:24,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:23:24,172 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:23:24,172 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:23:24,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:23:24,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:23:24,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:23:24,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:23:24,387 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:23:24,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i [2022-01-11 02:23:24,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da4e30fcc/8eba33552b1940298ad0bdfa97d4f31e/FLAG31ad21365 [2022-01-11 02:23:24,848 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:23:24,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i [2022-01-11 02:23:24,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da4e30fcc/8eba33552b1940298ad0bdfa97d4f31e/FLAG31ad21365 [2022-01-11 02:23:25,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da4e30fcc/8eba33552b1940298ad0bdfa97d4f31e [2022-01-11 02:23:25,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:23:25,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:23:25,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:23:25,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:23:25,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:23:25,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159358e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25, skipping insertion in model container [2022-01-11 02:23:25,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:23:25,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:23:25,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2022-01-11 02:23:25,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:23:25,455 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:23:25,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2022-01-11 02:23:25,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:23:25,501 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:23:25,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25 WrapperNode [2022-01-11 02:23:25,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:23:25,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:23:25,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:23:25,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:23:25,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,533 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 70 [2022-01-11 02:23:25,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:23:25,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:23:25,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:23:25,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:23:25,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:23:25,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:23:25,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:23:25,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:23:25,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:25,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:23:25,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:25,589 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) [2022-01-11 02:23:25,591 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 [2022-01-11 02:23:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:23:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:23:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:23:25,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:23:25,683 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:23:25,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:23:25,908 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:23:25,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:23:25,915 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 02:23:25,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:23:25 BoogieIcfgContainer [2022-01-11 02:23:25,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:23:25,917 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:23:25,917 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:23:25,927 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:23:25,930 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:23:25" (1/1) ... [2022-01-11 02:23:26,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:23:26 BasicIcfg [2022-01-11 02:23:26,009 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:23:26,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:23:26,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:23:26,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:23:26,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:23:25" (1/4) ... [2022-01-11 02:23:26,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a8970d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:23:26, skipping insertion in model container [2022-01-11 02:23:26,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:23:25" (2/4) ... [2022-01-11 02:23:26,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a8970d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:23:26, skipping insertion in model container [2022-01-11 02:23:26,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:23:25" (3/4) ... [2022-01-11 02:23:26,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a8970d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:23:26, skipping insertion in model container [2022-01-11 02:23:26,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:23:26" (4/4) ... [2022-01-11 02:23:26,017 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.iTransformedIcfg [2022-01-11 02:23:26,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:23:26,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 02:23:26,076 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:23:26,082 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:23:26,082 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 02:23:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:23:26,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:26,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:26,104 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:26,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2011965666, now seen corresponding path program 1 times [2022-01-11 02:23:26,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:26,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422013558] [2022-01-11 02:23:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:26,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:23:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:26,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:26,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422013558] [2022-01-11 02:23:26,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422013558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:23:26,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:23:26,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:23:26,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679248041] [2022-01-11 02:23:26,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:23:26,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:23:26,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:26,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:23:26,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:23:26,322 INFO L87 Difference]: Start difference. First operand has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:26,343 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-01-11 02:23:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:23:26,346 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 02:23:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:26,352 INFO L225 Difference]: With dead ends: 47 [2022-01-11 02:23:26,352 INFO L226 Difference]: Without dead ends: 21 [2022-01-11 02:23:26,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:23:26,360 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:26,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:23:26,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-11 02:23:26,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-11 02:23:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-11 02:23:26,383 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2022-01-11 02:23:26,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:26,384 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-11 02:23:26,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-11 02:23:26,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 02:23:26,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:26,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:26,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:23:26,385 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash -664712687, now seen corresponding path program 1 times [2022-01-11 02:23:26,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:26,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403454810] [2022-01-11 02:23:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:26,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:26,414 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:26,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078483152] [2022-01-11 02:23:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:26,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:26,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:26,420 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) [2022-01-11 02:23:26,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:23:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:23:26,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-11 02:23:26,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:26,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:23:26,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:26,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403454810] [2022-01-11 02:23:26,656 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:26,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078483152] [2022-01-11 02:23:26,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078483152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:23:26,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:23:26,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:23:26,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151250868] [2022-01-11 02:23:26,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:23:26,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:23:26,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:26,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:23:26,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:23:26,665 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:26,692 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-01-11 02:23:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:23:26,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-11 02:23:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:26,694 INFO L225 Difference]: With dead ends: 35 [2022-01-11 02:23:26,695 INFO L226 Difference]: Without dead ends: 23 [2022-01-11 02:23:26,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:23:26,698 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:26,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:23:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-11 02:23:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-11 02:23:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-11 02:23:26,715 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-11 02:23:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:26,716 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-11 02:23:26,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-11 02:23:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:23:26,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:26,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:26,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 02:23:26,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:26,934 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash 902759655, now seen corresponding path program 1 times [2022-01-11 02:23:26,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:26,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482735880] [2022-01-11 02:23:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:26,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:26,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:26,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027045013] [2022-01-11 02:23:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:26,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:26,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:26,960 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) [2022-01-11 02:23:26,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:23:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:23:27,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-11 02:23:27,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:27,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:23:27,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:27,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482735880] [2022-01-11 02:23:27,369 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:27,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027045013] [2022-01-11 02:23:27,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027045013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:23:27,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:23:27,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 02:23:27,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623234619] [2022-01-11 02:23:27,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:23:27,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:23:27,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:27,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:23:27,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:23:27,371 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:27,696 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-01-11 02:23:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 02:23:27,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-11 02:23:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:27,697 INFO L225 Difference]: With dead ends: 42 [2022-01-11 02:23:27,697 INFO L226 Difference]: Without dead ends: 35 [2022-01-11 02:23:27,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-11 02:23:27,699 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:27,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 56 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:23:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-11 02:23:27,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-01-11 02:23:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-01-11 02:23:27,704 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 13 [2022-01-11 02:23:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:27,704 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-01-11 02:23:27,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-01-11 02:23:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:23:27,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:27,705 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:27,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:27,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-11 02:23:27,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash 794881803, now seen corresponding path program 1 times [2022-01-11 02:23:27,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:27,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669679792] [2022-01-11 02:23:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:27,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:27,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:27,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773701151] [2022-01-11 02:23:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:27,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:27,980 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) [2022-01-11 02:23:27,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:23:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:23:28,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:23:28,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:28,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:23:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:28,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:28,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669679792] [2022-01-11 02:23:28,437 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:28,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773701151] [2022-01-11 02:23:28,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773701151] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:23:28,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:23:28,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-11 02:23:28,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85224099] [2022-01-11 02:23:28,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:23:28,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:23:28,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:28,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:23:28,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:23:28,439 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:28,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:28,495 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-01-11 02:23:28,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:23:28,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-11 02:23:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:28,496 INFO L225 Difference]: With dead ends: 45 [2022-01-11 02:23:28,496 INFO L226 Difference]: Without dead ends: 33 [2022-01-11 02:23:28,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:23:28,498 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:28,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 111 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:23:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-11 02:23:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-11 02:23:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-01-11 02:23:28,503 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 15 [2022-01-11 02:23:28,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:28,503 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-01-11 02:23:28,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:28,503 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-01-11 02:23:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 02:23:28,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:28,504 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:28,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:28,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:28,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1094451411, now seen corresponding path program 1 times [2022-01-11 02:23:28,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:28,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7757154] [2022-01-11 02:23:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:28,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:28,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:28,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770900634] [2022-01-11 02:23:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:28,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:28,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:28,759 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) [2022-01-11 02:23:28,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:23:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:23:28,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 02:23:28,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:34,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:23:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:34,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:34,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7757154] [2022-01-11 02:23:34,839 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:34,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770900634] [2022-01-11 02:23:34,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770900634] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:23:34,839 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:23:34,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-01-11 02:23:34,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326367782] [2022-01-11 02:23:34,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:23:34,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 02:23:34,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 02:23:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=95, Unknown=2, NotChecked=0, Total=132 [2022-01-11 02:23:34,841 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:35,202 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2022-01-11 02:23:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 02:23:35,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-11 02:23:35,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:35,203 INFO L225 Difference]: With dead ends: 61 [2022-01-11 02:23:35,204 INFO L226 Difference]: Without dead ends: 41 [2022-01-11 02:23:35,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=51, Invalid=129, Unknown=2, NotChecked=0, Total=182 [2022-01-11 02:23:35,205 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:35,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 35 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-01-11 02:23:35,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-11 02:23:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-01-11 02:23:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-01-11 02:23:35,210 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16 [2022-01-11 02:23:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:35,211 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-01-11 02:23:35,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-01-11 02:23:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-11 02:23:35,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:35,211 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:35,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:35,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:35,424 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash 431707999, now seen corresponding path program 1 times [2022-01-11 02:23:35,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:35,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041988030] [2022-01-11 02:23:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:35,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:35,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:35,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877136978] [2022-01-11 02:23:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:35,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:35,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:35,454 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) [2022-01-11 02:23:35,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:23:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:23:35,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-11 02:23:35,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:35,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:23:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:37,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:37,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041988030] [2022-01-11 02:23:37,081 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:37,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877136978] [2022-01-11 02:23:37,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877136978] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 02:23:37,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:23:37,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-01-11 02:23:37,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257426695] [2022-01-11 02:23:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:23:37,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:23:37,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:23:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:23:37,083 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:37,099 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-01-11 02:23:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:23:37,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-11 02:23:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:37,101 INFO L225 Difference]: With dead ends: 42 [2022-01-11 02:23:37,101 INFO L226 Difference]: Without dead ends: 36 [2022-01-11 02:23:37,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:23:37,102 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:37,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-01-11 02:23:37,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-11 02:23:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-11 02:23:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-01-11 02:23:37,107 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 17 [2022-01-11 02:23:37,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:37,107 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-01-11 02:23:37,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-01-11 02:23:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 02:23:37,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:37,108 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:37,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:37,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:37,327 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1325428689, now seen corresponding path program 2 times [2022-01-11 02:23:37,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:37,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377983415] [2022-01-11 02:23:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:37,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:37,346 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:37,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136570161] [2022-01-11 02:23:37,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:23:37,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:37,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:37,348 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) [2022-01-11 02:23:37,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 02:23:37,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-11 02:23:37,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:23:37,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:23:37,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-11 02:23:37,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:23:37,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377983415] [2022-01-11 02:23:37,635 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:37,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136570161] [2022-01-11 02:23:37,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136570161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:23:37,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:23:37,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:23:37,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212204630] [2022-01-11 02:23:37,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:23:37,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:23:37,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:23:37,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:23:37,637 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:37,700 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-01-11 02:23:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:23:37,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-11 02:23:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:37,702 INFO L225 Difference]: With dead ends: 48 [2022-01-11 02:23:37,702 INFO L226 Difference]: Without dead ends: 42 [2022-01-11 02:23:37,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:23:37,703 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:37,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 47 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:23:37,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-11 02:23:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2022-01-11 02:23:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-01-11 02:23:37,708 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 18 [2022-01-11 02:23:37,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:37,709 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-01-11 02:23:37,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:37,709 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-01-11 02:23:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 02:23:37,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:37,709 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:37,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:37,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:37,916 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:37,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:37,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1464363208, now seen corresponding path program 1 times [2022-01-11 02:23:37,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:37,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073006179] [2022-01-11 02:23:37,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:37,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:37,930 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:37,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280924712] [2022-01-11 02:23:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:37,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:37,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:37,936 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) [2022-01-11 02:23:37,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 02:23:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:23:37,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-11 02:23:37,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:38,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:23:38,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:38,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073006179] [2022-01-11 02:23:38,037 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:38,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280924712] [2022-01-11 02:23:38,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280924712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:23:38,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:23:38,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:23:38,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640497849] [2022-01-11 02:23:38,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:23:38,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:23:38,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:23:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:23:38,039 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:38,068 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-01-11 02:23:38,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:23:38,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-11 02:23:38,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:38,069 INFO L225 Difference]: With dead ends: 48 [2022-01-11 02:23:38,069 INFO L226 Difference]: Without dead ends: 36 [2022-01-11 02:23:38,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:23:38,070 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:38,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:23:38,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-11 02:23:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-01-11 02:23:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-01-11 02:23:38,075 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2022-01-11 02:23:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:38,075 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-01-11 02:23:38,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-01-11 02:23:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-11 02:23:38,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:38,076 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:38,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:38,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:38,289 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:38,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:38,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1355811938, now seen corresponding path program 1 times [2022-01-11 02:23:38,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:38,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004507336] [2022-01-11 02:23:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:38,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:38,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:38,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700272005] [2022-01-11 02:23:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:38,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:38,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:38,327 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) [2022-01-11 02:23:38,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 02:23:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:23:38,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-11 02:23:38,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:23:39,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:23:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:23:40,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004507336] [2022-01-11 02:23:40,732 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700272005] [2022-01-11 02:23:40,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700272005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:23:40,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:23:40,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-01-11 02:23:40,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919694827] [2022-01-11 02:23:40,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:23:40,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-11 02:23:40,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-11 02:23:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-01-11 02:23:40,734 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:41,442 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2022-01-11 02:23:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 02:23:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-11 02:23:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:41,443 INFO L225 Difference]: With dead ends: 63 [2022-01-11 02:23:41,443 INFO L226 Difference]: Without dead ends: 41 [2022-01-11 02:23:41,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-01-11 02:23:41,444 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:41,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 164 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 9 Unchecked, 0.3s Time] [2022-01-11 02:23:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-11 02:23:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-11 02:23:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-01-11 02:23:41,450 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 24 [2022-01-11 02:23:41,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:41,450 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-01-11 02:23:41,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:41,450 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-01-11 02:23:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 02:23:41,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:41,451 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:41,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-11 02:23:41,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-11 02:23:41,662 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash 902206424, now seen corresponding path program 2 times [2022-01-11 02:23:41,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:41,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352198001] [2022-01-11 02:23:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:41,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:41,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:41,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180839255] [2022-01-11 02:23:41,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:23:41,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:41,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:41,699 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:23:41,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-11 02:23:42,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:23:42,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:23:42,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-11 02:23:42,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 02:23:42,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:23:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 02:23:43,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:43,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352198001] [2022-01-11 02:23:43,321 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:43,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180839255] [2022-01-11 02:23:43,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180839255] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:23:43,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:23:43,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2022-01-11 02:23:43,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697503602] [2022-01-11 02:23:43,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:23:43,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 02:23:43,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 02:23:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-01-11 02:23:43,322 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:43,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:43,360 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-01-11 02:23:43,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:23:43,361 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-11 02:23:43,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:43,361 INFO L225 Difference]: With dead ends: 41 [2022-01-11 02:23:43,361 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 02:23:43,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-01-11 02:23:43,362 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:43,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-01-11 02:23:43,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 02:23:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 02:23:43,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 02:23:43,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2022-01-11 02:23:43,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:43,364 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 02:23:43,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:23:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 02:23:43,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 02:23:43,366 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-11 02:23:43,367 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-11 02:23:43,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:43,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-11 02:23:43,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 02:23:44,807 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L16-2(line 16) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L854 garLoopResultBuilder]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse8 (< |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| 2147483647)) (.cse0 (<= 0 ~counter~0Int)) (.cse3 (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|)) (.cse4 (<= |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| 0)) (.cse5 (<= |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1)) (.cse6 (forall ((|ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| Int)) (= (mod (+ |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (mod (* |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296)) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|))) (.cse7 (<= 0 |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int|)) (.cse9 (= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|))) (or (and .cse0 (exists ((|aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81_84| Int) (|aux_div_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81| Int)) (let ((.cse2 (+ (* |aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81_84| 4294967296) ~counter~0Int)) (.cse1 (* |aux_div_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81| 4294967296))) (and (<= (+ .cse1 1) .cse2) (<= 2 .cse2) (< .cse2 (+ 4294967297 .cse1)) (<= |aux_div_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81| (div (+ (* |aux_div_aux_mod_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81_84| (- 4294967296)) (* (- 1) ~counter~0Int) 2 .cse1) 4294967296))))) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (not (< (* (mod ~counter~0Int 2147483648) 2) (+ 2 ~counter~0Int)))) (and .cse0 (< ~counter~0Int 4294967296) (<= (div (+ (- 1) ~counter~0Int) (- 4294967296)) (div (+ (* (- 1) ~counter~0Int) 1) 4294967296)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 (= |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|) .cse3 .cse4 .cse5 .cse6 .cse7 (<= ~counter~0Int 0) .cse9 (< |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| 2147483647)))) [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 49) no Hoare annotation was computed. [2022-01-11 02:23:44,808 INFO L858 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-01-11 02:23:44,809 INFO L858 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2022-01-11 02:23:44,809 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2022-01-11 02:23:44,809 INFO L858 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2022-01-11 02:23:44,809 INFO L861 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2022-01-11 02:23:44,809 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2022-01-11 02:23:44,809 INFO L854 garLoopResultBuilder]: At program point L19-2(lines 18 24) the Hoare annotation is: (and (= |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|) (<= 1 |ULTIMATE.start_ULTIMATE.start___VERIFIER_assert_~cond#1Int|) (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) (<= |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| 0) (<= |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1) (<= 0 |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int|) (let ((.cse2 (+ ~counter~0Int 1))) (let ((.cse1 (mod .cse2 4294967296))) (or (not (let ((.cse0 (+ .cse1 1))) (< (* 2 (mod .cse0 2147483648)) (+ (mod .cse0 4294967296) 2)))) (not (< (* (mod .cse2 2147483648) 2) (+ 2 .cse1)))))) (not (<= |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|) (not (< (* (mod ~counter~0Int 2147483648) 2) (+ 2 ~counter~0Int))) (< |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| 2147483647)) [2022-01-11 02:23:44,809 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-01-11 02:23:44,809 INFO L861 garLoopResultBuilder]: At program point L51(lines 26 52) the Hoare annotation is: true [2022-01-11 02:23:44,809 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-01-11 02:23:44,810 INFO L858 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2022-01-11 02:23:44,810 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-11 02:23:44,810 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2022-01-11 02:23:44,810 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-11 02:23:44,812 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:44,813 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 02:23:44,848 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |aux_div_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81| at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.bvinttranslation.IntToBvBackTranslation.convert(IntToBvBackTranslation.java:88) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation.IcfgTransformationObserver.lambda$0(IcfgTransformationObserver.java:355) at de.uni_freiburg.informatik.ultimate.icfgtransformer.IcfgTransformationBacktranslator.translateExpression(IcfgTransformationBacktranslator.java:113) at de.uni_freiburg.informatik.ultimate.icfgtransformer.IcfgTransformationBacktranslator.translateExpression(IcfgTransformationBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-11 02:23:44,853 INFO L158 Benchmark]: Toolchain (without parser) took 19605.67ms. Allocated memory was 184.5MB in the beginning and 320.9MB in the end (delta: 136.3MB). Free memory was 126.7MB in the beginning and 226.5MB in the end (delta: -99.8MB). Peak memory consumption was 36.1MB. Max. memory is 8.0GB. [2022-01-11 02:23:44,854 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 184.5MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 02:23:44,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.70ms. Allocated memory was 184.5MB in the beginning and 267.4MB in the end (delta: 82.8MB). Free memory was 126.5MB in the beginning and 239.6MB in the end (delta: -113.1MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. [2022-01-11 02:23:44,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.93ms. Allocated memory is still 267.4MB. Free memory was 239.6MB in the beginning and 238.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-11 02:23:44,854 INFO L158 Benchmark]: Boogie Preprocessor took 21.05ms. Allocated memory is still 267.4MB. Free memory was 238.1MB in the beginning and 237.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 02:23:44,855 INFO L158 Benchmark]: RCFGBuilder took 360.62ms. Allocated memory is still 267.4MB. Free memory was 237.0MB in the beginning and 225.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-11 02:23:44,855 INFO L158 Benchmark]: IcfgTransformer took 92.53ms. Allocated memory is still 267.4MB. Free memory was 225.5MB in the beginning and 221.8MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-11 02:23:44,855 INFO L158 Benchmark]: TraceAbstraction took 18841.68ms. Allocated memory was 267.4MB in the beginning and 320.9MB in the end (delta: 53.5MB). Free memory was 221.3MB in the beginning and 226.5MB in the end (delta: -5.2MB). Peak memory consumption was 49.3MB. Max. memory is 8.0GB. [2022-01-11 02:23:44,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 184.5MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 249.70ms. Allocated memory was 184.5MB in the beginning and 267.4MB in the end (delta: 82.8MB). Free memory was 126.5MB in the beginning and 239.6MB in the end (delta: -113.1MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.93ms. Allocated memory is still 267.4MB. Free memory was 239.6MB in the beginning and 238.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.05ms. Allocated memory is still 267.4MB. Free memory was 238.1MB in the beginning and 237.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 360.62ms. Allocated memory is still 267.4MB. Free memory was 237.0MB in the beginning and 225.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 92.53ms. Allocated memory is still 267.4MB. Free memory was 225.5MB in the beginning and 221.8MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 18841.68ms. Allocated memory was 267.4MB in the beginning and 320.9MB in the end (delta: 53.5MB). Free memory was 221.3MB in the beginning and 226.5MB in the end (delta: -5.2MB). Peak memory consumption was 49.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 18.7s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 781 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 44 IncrementalHoareTripleChecker+Unchecked, 562 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 209 IncrementalHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 219 mSDtfsCounter, 209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 274 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=9, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 266 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 138 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 179 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 269 ConstructedInterpolants, 24 QuantifiedInterpolants, 4325 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1563 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 86/131 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((~bvule32(1bv32, cond) && !~bvule32(b, r)) && ~bvule32(0bv32, r)) && ~bvule32(q, 0bv32)) && ~bvult64(b, 2147483647bv32)) && (!~bvult64(~zero_extendFrom32To33(~bvmul32(~zero_extendFrom31To32(~bvadd16(~zero_extendFrom32To33(~bvadd16(~zero_extendFrom32To33(counter), 1bv33)[31:0]), 1bv33)[30:0]), 2bv32)), ~bvadd16(~zero_extendFrom32To33(~bvadd16(~zero_extendFrom32To33(~bvadd16(~zero_extendFrom32To33(counter), 1bv33)[31:0]), 1bv33)[31:0]), 2bv33)) || !~bvult64(~zero_extendFrom32To33(~bvadd16(~zero_extendFrom32To33(counter), 1bv33)[30:0] ++ 0bv1), ~bvadd16(2bv33, ~zero_extendFrom32To33(~bvadd16(~zero_extendFrom32To33(counter), 1bv33)[31:0]))))) && ~bvule32(0bv32, cond)) && r == A) && b == B) && ~bvule32(0bv32, q)) && !~bvult64(~zero_extendFrom32To33(counter[30:0] ++ 0bv1), ~bvadd16(2bv33, ~zero_extendFrom32To33(counter)))) && ~bvule32(cond, 1bv32) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |aux_div_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |aux_div_ULTIMATE.start_ULTIMATE.start_main_#t~post3#1Int_81|: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.bvinttranslation.IntToBvBackTranslation.convert(IntToBvBackTranslation.java:88) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-11 02:23:45,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...