/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/array-lopstr16/flag_loopdep_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:19:23,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:19:23,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:19:23,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:19:23,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:19:23,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:19:23,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:19:23,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:19:23,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:19:23,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:19:23,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:19:23,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:19:23,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:19:23,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:19:23,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:19:23,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:19:23,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:19:23,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:19:23,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:19:23,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:19:23,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:19:23,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:19:23,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:19:23,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:19:23,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 03:19:23,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:19:23,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:19:23,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:19:23,886 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 03:19:23,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:19:23,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:19:23,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:19:23,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:19:23,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:19:23,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:19:23,912 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:19:23,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:19:23,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:19:23,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:19:23,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:19:23,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:19:23,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:19:23,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:19:23,920 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:19:23,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:19:24,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:19:24,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:19:24,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:19:24,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:19:24,129 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:19:24,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep_simple.i [2022-01-11 03:19:24,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a644f92df/5e2116e324a84024a6622ded03b0e134/FLAG0787f269b [2022-01-11 03:19:24,586 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:19:24,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep_simple.i [2022-01-11 03:19:24,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a644f92df/5e2116e324a84024a6622ded03b0e134/FLAG0787f269b [2022-01-11 03:19:24,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a644f92df/5e2116e324a84024a6622ded03b0e134 [2022-01-11 03:19:24,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:19:24,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:19:24,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:19:24,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:19:24,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:19:24,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92dad90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24, skipping insertion in model container [2022-01-11 03:19:24,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:19:24,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:19:24,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep_simple.i[812,825] [2022-01-11 03:19:24,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:19:24,780 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:19:24,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep_simple.i[812,825] [2022-01-11 03:19:24,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:19:24,811 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:19:24,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24 WrapperNode [2022-01-11 03:19:24,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:19:24,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:19:24,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:19:24,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:19:24,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,840 INFO L137 Inliner]: procedures = 19, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2022-01-11 03:19:24,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:19:24,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:19:24,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:19:24,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:19:24,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:19:24,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:19:24,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:19:24,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:19:24,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (1/1) ... [2022-01-11 03:19:24,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:19:24,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:24,894 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 03:19:24,895 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 03:19:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:19:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:19:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 03:19:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 03:19:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:19:24,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:19:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 03:19:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 03:19:24,965 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:19:24,966 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:19:25,124 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:19:25,127 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:19:25,128 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-11 03:19:25,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:19:25 BoogieIcfgContainer [2022-01-11 03:19:25,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:19:25,129 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:19:25,129 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:19:25,130 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:19:25,132 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:19:25" (1/1) ... [2022-01-11 03:19:25,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:19:25 BasicIcfg [2022-01-11 03:19:25,237 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:19:25,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:19:25,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:19:25,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:19:25,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:19:24" (1/4) ... [2022-01-11 03:19:25,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f9dc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:19:25, skipping insertion in model container [2022-01-11 03:19:25,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:24" (2/4) ... [2022-01-11 03:19:25,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f9dc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:19:25, skipping insertion in model container [2022-01-11 03:19:25,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:19:25" (3/4) ... [2022-01-11 03:19:25,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f9dc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:19:25, skipping insertion in model container [2022-01-11 03:19:25,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:19:25" (4/4) ... [2022-01-11 03:19:25,244 INFO L111 eAbstractionObserver]: Analyzing ICFG flag_loopdep_simple.iTransformedIcfg [2022-01-11 03:19:25,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:19:25,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:19:25,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:19:25,301 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 03:19:25,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:19:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 03:19:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 03:19:25,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:25,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:25,320 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1887403375, now seen corresponding path program 1 times [2022-01-11 03:19:25,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:25,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464905350] [2022-01-11 03:19:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:25,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:25,505 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 03:19:25,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:25,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464905350] [2022-01-11 03:19:25,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464905350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:19:25,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:19:25,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:19:25,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519964792] [2022-01-11 03:19:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:19:25,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 03:19:25,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 03:19:25,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:19:25,542 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 03:19:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:25,555 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2022-01-11 03:19:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 03:19:25,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-01-11 03:19:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:25,561 INFO L225 Difference]: With dead ends: 36 [2022-01-11 03:19:25,562 INFO L226 Difference]: Without dead ends: 16 [2022-01-11 03:19:25,564 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 03:19:25,568 INFO L933 BasicCegarLoop]: 24 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, 24 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 03:19:25,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:19:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-11 03:19:25,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-11 03:19:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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 03:19:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-01-11 03:19:25,598 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2022-01-11 03:19:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:25,599 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-01-11 03:19:25,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 03:19:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-01-11 03:19:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 03:19:25,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:25,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:25,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:19:25,601 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:25,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash -636124435, now seen corresponding path program 1 times [2022-01-11 03:19:25,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240739576] [2022-01-11 03:19:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:25,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:25,706 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 03:19:25,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:25,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240739576] [2022-01-11 03:19:25,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240739576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:19:25,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:19:25,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:19:25,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202310546] [2022-01-11 03:19:25,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:19:25,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:19:25,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:25,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:19:25,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:19:25,710 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 03:19:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:25,764 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2022-01-11 03:19:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:19:25,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-01-11 03:19:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:25,765 INFO L225 Difference]: With dead ends: 34 [2022-01-11 03:19:25,765 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 03:19:25,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:19:25,766 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 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 03:19:25,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:19:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 03:19:25,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2022-01-11 03:19:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 03:19:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 03:19:25,770 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2022-01-11 03:19:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:25,770 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 03:19:25,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 03:19:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 03:19:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 03:19:25,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:25,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:25,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 03:19:25,771 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 881674102, now seen corresponding path program 1 times [2022-01-11 03:19:25,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:25,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077767667] [2022-01-11 03:19:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:25,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 03:19:25,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:25,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077767667] [2022-01-11 03:19:25,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077767667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:19:25,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:19:25,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:19:25,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933295647] [2022-01-11 03:19:25,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:19:25,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:19:25,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:25,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:19:25,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:19:25,853 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 03:19:25,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:25,883 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-01-11 03:19:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:19:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 03:19:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:25,884 INFO L225 Difference]: With dead ends: 32 [2022-01-11 03:19:25,884 INFO L226 Difference]: Without dead ends: 19 [2022-01-11 03:19:25,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:19:25,885 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:25,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:19:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-11 03:19:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-01-11 03:19:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 03:19:25,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-01-11 03:19:25,890 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 13 [2022-01-11 03:19:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:25,891 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-01-11 03:19:25,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 03:19:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-01-11 03:19:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 03:19:25,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:25,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:25,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 03:19:25,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash -740998732, now seen corresponding path program 1 times [2022-01-11 03:19:25,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:25,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690604262] [2022-01-11 03:19:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:25,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 03:19:25,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:25,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690604262] [2022-01-11 03:19:25,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690604262] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:19:25,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117072088] [2022-01-11 03:19:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:25,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:25,982 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 03:19:25,982 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 03:19:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:26,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 03:19:26,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:19:26,131 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 03:19:26,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:19:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 03:19:26,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117072088] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:19:26,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 03:19:26,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2022-01-11 03:19:26,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478646260] [2022-01-11 03:19:26,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 03:19:26,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 03:19:26,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 03:19:26,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-11 03:19:26,265 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 03:19:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:26,420 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2022-01-11 03:19:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 03:19:26,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) Word has length 15 [2022-01-11 03:19:26,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:26,422 INFO L225 Difference]: With dead ends: 58 [2022-01-11 03:19:26,422 INFO L226 Difference]: Without dead ends: 50 [2022-01-11 03:19:26,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-11 03:19:26,423 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:26,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 72 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 03:19:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-11 03:19:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 27. [2022-01-11 03:19:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 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 03:19:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-01-11 03:19:26,427 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 15 [2022-01-11 03:19:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:26,428 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-01-11 03:19:26,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 03:19:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-01-11 03:19:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-11 03:19:26,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:26,428 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:26,434 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 03:19:26,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:26,634 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -100354769, now seen corresponding path program 2 times [2022-01-11 03:19:26,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:26,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387963346] [2022-01-11 03:19:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:26,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 03:19:26,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387963346] [2022-01-11 03:19:26,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387963346] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:19:26,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580515057] [2022-01-11 03:19:26,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 03:19:26,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:26,852 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 03:19:26,905 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 03:19:26,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 03:19:26,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:19:26,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-11 03:19:26,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:19:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 03:19:27,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:19:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 03:19:27,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580515057] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:19:27,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 03:19:27,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 11 [2022-01-11 03:19:27,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627397509] [2022-01-11 03:19:27,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 03:19:27,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 03:19:27,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:27,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 03:19:27,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-11 03:19:27,182 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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 03:19:27,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:27,280 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2022-01-11 03:19:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 03:19:27,282 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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 03:19:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:27,282 INFO L225 Difference]: With dead ends: 55 [2022-01-11 03:19:27,282 INFO L226 Difference]: Without dead ends: 33 [2022-01-11 03:19:27,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-11 03:19:27,283 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:27,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 03:19:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-11 03:19:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-11 03:19:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 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 03:19:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-01-11 03:19:27,287 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2022-01-11 03:19:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:27,288 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-01-11 03:19:27,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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 03:19:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-01-11 03:19:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 03:19:27,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:27,288 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:27,321 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 03:19:27,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:27,489 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1164977333, now seen corresponding path program 3 times [2022-01-11 03:19:27,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:27,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33042430] [2022-01-11 03:19:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:27,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-11 03:19:27,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:27,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33042430] [2022-01-11 03:19:27,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33042430] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:19:27,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007012985] [2022-01-11 03:19:27,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 03:19:27,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:27,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:27,660 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 03:19:27,661 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 03:19:27,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-11 03:19:27,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:19:27,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-11 03:19:27,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:19:28,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 03:19:28,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 03:19:28,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 26 [2022-01-11 03:19:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-11 03:19:28,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:19:28,569 INFO L353 Elim1Store]: treesize reduction 5, result has 80.8 percent of original size [2022-01-11 03:19:28,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 33 [2022-01-11 03:19:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-11 03:19:28,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007012985] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:19:28,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 03:19:28,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2022-01-11 03:19:28,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632038104] [2022-01-11 03:19:28,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 03:19:28,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-11 03:19:28,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-11 03:19:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-01-11 03:19:28,757 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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 03:19:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:29,377 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2022-01-11 03:19:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-11 03:19:29,378 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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 30 [2022-01-11 03:19:29,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:29,379 INFO L225 Difference]: With dead ends: 115 [2022-01-11 03:19:29,379 INFO L226 Difference]: Without dead ends: 107 [2022-01-11 03:19:29,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2022-01-11 03:19:29,380 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 124 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:29,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 375 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 265 Invalid, 0 Unknown, 112 Unchecked, 0.3s Time] [2022-01-11 03:19:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-11 03:19:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 51. [2022-01-11 03:19:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 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 03:19:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-01-11 03:19:29,398 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 30 [2022-01-11 03:19:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:29,398 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-01-11 03:19:29,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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 03:19:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-01-11 03:19:29,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 03:19:29,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:29,399 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:29,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-11 03:19:29,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:29,603 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash -188332364, now seen corresponding path program 1 times [2022-01-11 03:19:29,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:29,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213088613] [2022-01-11 03:19:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:29,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-11 03:19:29,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:29,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213088613] [2022-01-11 03:19:29,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213088613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:19:29,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:19:29,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:19:29,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516537399] [2022-01-11 03:19:29,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:19:29,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:19:29,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:29,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:19:29,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:19:29,649 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 03:19:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:29,661 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2022-01-11 03:19:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:19:29,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 30 [2022-01-11 03:19:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:29,663 INFO L225 Difference]: With dead ends: 76 [2022-01-11 03:19:29,663 INFO L226 Difference]: Without dead ends: 39 [2022-01-11 03:19:29,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:19:29,663 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:29,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:19:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-11 03:19:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-01-11 03:19:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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 03:19:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-01-11 03:19:29,668 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 30 [2022-01-11 03:19:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:29,668 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-01-11 03:19:29,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 03:19:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-01-11 03:19:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-11 03:19:29,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:29,669 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:29,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 03:19:29,669 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:29,669 INFO L85 PathProgramCache]: Analyzing trace with hash 454859827, now seen corresponding path program 1 times [2022-01-11 03:19:29,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:29,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663791132] [2022-01-11 03:19:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:29,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-11 03:19:29,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:29,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663791132] [2022-01-11 03:19:29,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663791132] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:19:29,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657536472] [2022-01-11 03:19:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:29,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:29,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:29,819 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 03:19:29,820 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 03:19:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:29,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-11 03:19:29,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:19:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-11 03:19:30,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:19:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:19:36,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657536472] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:19:36,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 03:19:36,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 12] total 23 [2022-01-11 03:19:36,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674502630] [2022-01-11 03:19:36,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 03:19:36,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-11 03:19:36,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-11 03:19:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-01-11 03:19:36,557 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 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 03:19:42,600 WARN L228 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 03:19:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:46,045 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2022-01-11 03:19:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 03:19:46,046 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 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 38 [2022-01-11 03:19:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:46,046 INFO L225 Difference]: With dead ends: 79 [2022-01-11 03:19:46,046 INFO L226 Difference]: Without dead ends: 51 [2022-01-11 03:19:46,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2022-01-11 03:19:46,047 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:46,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 163 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 03:19:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-11 03:19:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-01-11 03:19:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 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 03:19:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2022-01-11 03:19:46,053 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 38 [2022-01-11 03:19:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:46,053 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2022-01-11 03:19:46,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 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 03:19:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2022-01-11 03:19:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 03:19:46,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:46,054 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:46,075 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 03:19:46,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:46,255 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash 228710847, now seen corresponding path program 2 times [2022-01-11 03:19:46,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:46,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497683964] [2022-01-11 03:19:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:46,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-11 03:19:46,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:46,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497683964] [2022-01-11 03:19:46,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497683964] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:19:46,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41420455] [2022-01-11 03:19:46,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 03:19:46,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:46,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:46,452 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 03:19:46,453 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 03:19:46,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 03:19:46,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:19:46,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-11 03:19:46,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:19:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 03:19:47,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:19:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-11 03:19:48,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41420455] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:19:48,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 03:19:48,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 8] total 25 [2022-01-11 03:19:48,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978563655] [2022-01-11 03:19:48,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 03:19:48,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-11 03:19:48,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:48,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-11 03:19:48,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-01-11 03:19:48,797 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 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 03:20:02,248 WARN L228 SmtUtils]: Spent 10.31s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 03:20:10,120 WARN L228 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 42 DAG size of output: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 03:20:18,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:20:18,600 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2022-01-11 03:20:18,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-11 03:20:18,601 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 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 50 [2022-01-11 03:20:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:20:18,601 INFO L225 Difference]: With dead ends: 156 [2022-01-11 03:20:18,601 INFO L226 Difference]: Without dead ends: 145 [2022-01-11 03:20:18,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=184, Invalid=685, Unknown=1, NotChecked=0, Total=870 [2022-01-11 03:20:18,602 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 339 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-11 03:20:18,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 456 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-11 03:20:18,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-11 03:20:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 72. [2022-01-11 03:20:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 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 03:20:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2022-01-11 03:20:18,615 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 50 [2022-01-11 03:20:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:20:18,616 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2022-01-11 03:20:18,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 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 03:20:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2022-01-11 03:20:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 03:20:18,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:20:18,617 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:20:18,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-11 03:20:18,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:20:18,818 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:20:18,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:20:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1166352640, now seen corresponding path program 3 times [2022-01-11 03:20:18,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:20:18,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179301903] [2022-01-11 03:20:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:20:18,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:20:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:20:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-01-11 03:20:19,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:20:19,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179301903] [2022-01-11 03:20:19,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179301903] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:20:19,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646859777] [2022-01-11 03:20:19,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 03:20:19,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:20:19,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:20:19,185 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 03:20:19,186 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 03:20:22,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-11 03:20:22,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:20:22,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-11 03:20:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:20:22,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-11 03:20:22,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23