/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_LAZY.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:24:30,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:24:30,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:24:30,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:24:30,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:24:30,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:24:30,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:24:30,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:24:30,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:24:30,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:24:30,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:24:30,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:24:30,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:24:30,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:24:30,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:24:30,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:24:30,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:24:30,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:24:30,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:24:30,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:24:30,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:24:30,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:24:30,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:24:30,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:24:30,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:24:30,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:24:30,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:24:30,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:24:30,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:24:30,822 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:24:30,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:24:30,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:24:30,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:24:30,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:24:30,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:24:30,824 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:24:30,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:24:30,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:24:30,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:24:30,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:24:30,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:24:30,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:24:30,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:24:30,825 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:24:30,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:24:30,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:24:30,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:24:30,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:24:30,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:24:30,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:24:30,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:24:30,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:24:30,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:24:30,828 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:24:30,828 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:24:31,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:24:31,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:24:31,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:24:31,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:24:31,057 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:24:31,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2022-01-10 14:24:31,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38efedabe/d8127bd3ece2495080bfd8b3e39c9ac6/FLAG26b669f37 [2022-01-10 14:24:31,419 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:24:31,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2022-01-10 14:24:31,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38efedabe/d8127bd3ece2495080bfd8b3e39c9ac6/FLAG26b669f37 [2022-01-10 14:24:31,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38efedabe/d8127bd3ece2495080bfd8b3e39c9ac6 [2022-01-10 14:24:31,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:24:31,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:24:31,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:24:31,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:24:31,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:24:31,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:24:31" (1/1) ... [2022-01-10 14:24:31,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f406ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:31, skipping insertion in model container [2022-01-10 14:24:31,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:24:31" (1/1) ... [2022-01-10 14:24:31,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:24:31,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:24:31,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906] [2022-01-10 14:24:32,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:24:32,020 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:24:32,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906] [2022-01-10 14:24:32,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:24:32,046 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:24:32,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32 WrapperNode [2022-01-10 14:24:32,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:24:32,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:24:32,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:24:32,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:24:32,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,081 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 207 [2022-01-10 14:24:32,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:24:32,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:24:32,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:24:32,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:24:32,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:24:32,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:24:32,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:24:32,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:24:32,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:24:32,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:24:32,144 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) [2022-01-10 14:24:32,195 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 [2022-01-10 14:24:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:24:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:24:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:24:32,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:24:32,259 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:24:32,260 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:24:32,540 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:24:32,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:24:32,549 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 14:24:32,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:24:32 BoogieIcfgContainer [2022-01-10 14:24:32,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:24:32,569 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:24:32,569 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:24:32,570 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:24:32,572 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:24:32" (1/1) ... [2022-01-10 14:24:32,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:24:32 BasicIcfg [2022-01-10 14:24:32,688 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:24:32,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:24:32,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:24:32,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:24:32,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:24:31" (1/4) ... [2022-01-10 14:24:32,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3181e11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:24:32, skipping insertion in model container [2022-01-10 14:24:32,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:32" (2/4) ... [2022-01-10 14:24:32,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3181e11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:24:32, skipping insertion in model container [2022-01-10 14:24:32,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:24:32" (3/4) ... [2022-01-10 14:24:32,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3181e11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:24:32, skipping insertion in model container [2022-01-10 14:24:32,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:24:32" (4/4) ... [2022-01-10 14:24:32,693 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.iTransformedIcfg [2022-01-10 14:24:32,696 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:24:32,697 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-01-10 14:24:32,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:24:32,735 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 [2022-01-10 14:24:32,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-01-10 14:24:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 76 states have (on average 1.6973684210526316) internal successors, (129), 94 states have internal predecessors, (129), 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) [2022-01-10 14:24:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:24:32,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:32,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:32,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-01-10 14:24:32,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:32,752 INFO L85 PathProgramCache]: Analyzing trace with hash 517342936, now seen corresponding path program 1 times [2022-01-10 14:24:32,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:32,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197369195] [2022-01-10 14:24:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:32,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:33,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:33,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197369195] [2022-01-10 14:24:33,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197369195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:33,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:33,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:24:33,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124943723] [2022-01-10 14:24:33,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:33,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:24:33,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:33,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:24:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:24:33,107 INFO L87 Difference]: Start difference. First operand has 95 states, 76 states have (on average 1.6973684210526316) internal successors, (129), 94 states have internal predecessors, (129), 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 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-01-10 14:24:33,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:33,390 INFO L93 Difference]: Finished difference Result 197 states and 252 transitions. [2022-01-10 14:24:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:24:33,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 [2022-01-10 14:24:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:33,398 INFO L225 Difference]: With dead ends: 197 [2022-01-10 14:24:33,398 INFO L226 Difference]: Without dead ends: 89 [2022-01-10 14:24:33,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 14:24:33,415 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 170 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:33,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 204 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 14:24:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-10 14:24:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-01-10 14:24:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 88 states have internal predecessors, (92), 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) [2022-01-10 14:24:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2022-01-10 14:24:33,461 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 11 [2022-01-10 14:24:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:33,461 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2022-01-10 14:24:33,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-01-10 14:24:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2022-01-10 14:24:33,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 14:24:33,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:33,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:33,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:24:33,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-01-10 14:24:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1049602725, now seen corresponding path program 1 times [2022-01-10 14:24:33,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:33,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877853124] [2022-01-10 14:24:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:33,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:33,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:33,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877853124] [2022-01-10 14:24:33,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877853124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:33,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:33,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:24:33,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090521148] [2022-01-10 14:24:33,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:33,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:24:33,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:24:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:24:33,596 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2022-01-10 14:24:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:33,768 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2022-01-10 14:24:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:24:33,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 [2022-01-10 14:24:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:33,771 INFO L225 Difference]: With dead ends: 118 [2022-01-10 14:24:33,771 INFO L226 Difference]: Without dead ends: 116 [2022-01-10 14:24:33,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 14:24:33,776 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 181 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:33,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 196 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:24:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-10 14:24:33,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 87. [2022-01-10 14:24:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 71 states have (on average 1.267605633802817) internal successors, (90), 86 states have internal predecessors, (90), 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) [2022-01-10 14:24:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2022-01-10 14:24:33,800 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 13 [2022-01-10 14:24:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:33,801 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2022-01-10 14:24:33,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2022-01-10 14:24:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2022-01-10 14:24:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 14:24:33,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:33,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:33,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:24:33,805 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-01-10 14:24:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1351554736, now seen corresponding path program 1 times [2022-01-10 14:24:33,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:33,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421449685] [2022-01-10 14:24:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:33,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:34,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421449685] [2022-01-10 14:24:34,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421449685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:34,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:34,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:24:34,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561206251] [2022-01-10 14:24:34,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:34,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:24:34,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:24:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:24:34,078 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2022-01-10 14:24:34,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:34,454 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2022-01-10 14:24:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 14:24:34,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 [2022-01-10 14:24:34,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:34,455 INFO L225 Difference]: With dead ends: 116 [2022-01-10 14:24:34,455 INFO L226 Difference]: Without dead ends: 108 [2022-01-10 14:24:34,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2022-01-10 14:24:34,457 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 314 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:34,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 178 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 14:24:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-10 14:24:34,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95. [2022-01-10 14:24:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 80 states have (on average 1.2625) internal successors, (101), 94 states have internal predecessors, (101), 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) [2022-01-10 14:24:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2022-01-10 14:24:34,480 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 16 [2022-01-10 14:24:34,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:34,481 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2022-01-10 14:24:34,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2022-01-10 14:24:34,481 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2022-01-10 14:24:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 14:24:34,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:34,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:34,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:24:34,482 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-01-10 14:24:34,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1763935405, now seen corresponding path program 1 times [2022-01-10 14:24:34,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:34,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997533093] [2022-01-10 14:24:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:34,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:34,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:34,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997533093] [2022-01-10 14:24:34,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997533093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:34,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:34,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:24:34,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697114977] [2022-01-10 14:24:34,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:34,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:24:34,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:24:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:24:34,621 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-01-10 14:24:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:34,769 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2022-01-10 14:24:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:24:34,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 [2022-01-10 14:24:34,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:34,771 INFO L225 Difference]: With dead ends: 115 [2022-01-10 14:24:34,771 INFO L226 Difference]: Without dead ends: 109 [2022-01-10 14:24:34,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 14:24:34,778 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 138 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:34,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 188 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:24:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-10 14:24:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2022-01-10 14:24:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 98 states have internal predecessors, (105), 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) [2022-01-10 14:24:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2022-01-10 14:24:34,800 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 18 [2022-01-10 14:24:34,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:34,800 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2022-01-10 14:24:34,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-01-10 14:24:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2022-01-10 14:24:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 14:24:34,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:34,801 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:34,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:24:34,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-01-10 14:24:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -126212597, now seen corresponding path program 1 times [2022-01-10 14:24:34,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:34,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693139290] [2022-01-10 14:24:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:34,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:35,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693139290] [2022-01-10 14:24:35,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693139290] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:24:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475170546] [2022-01-10 14:24:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:35,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:24:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:24:35,193 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) [2022-01-10 14:24:35,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:24:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:35,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 14:24:35,275 INFO L286 TraceCheckSpWp]: Computing forward predicates...