/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-multidimensional/diff-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:12:59,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:12:59,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:12:59,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 23:12:59,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 23:12:59,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 23:12:59,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 23:12:59,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 23:12:59,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 23:12:59,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 23:12:59,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 23:12:59,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-09 23:12:59,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 23:12:59,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 23:12:59,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 23:12:59,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 23:12:59,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 23:12:59,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 23:12:59,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 23:12:59,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 23:12:59,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 23:12:59,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 23:12:59,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 23:12:59,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 23:12:59,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-09 23:12:59,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:12:59,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:12:59,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:12:59,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 23:12:59,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:12:59,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:12:59,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:12:59,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:12:59,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:12:59,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:12:59,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:12:59,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:12:59,980 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:12:59,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:12:59,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:12:59,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:12:59,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:12:59,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:12:59,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:12:59,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:12:59,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:12:59,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:12:59,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:12:59,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:12:59,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:12:59,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:12:59,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:12:59,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:12:59,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:12:59,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:12:59,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:12:59,984 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:12:59,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:12:59,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:12:59,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:13:00,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:13:00,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:13:00,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:13:00,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:13:00,211 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:13:00,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/diff-2-n-u.c [2022-01-09 23:13:00,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8b05d14/a9015e8724824d26b845142114bec3fb/FLAGbb96ae5a7 [2022-01-09 23:13:00,635 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:13:00,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/diff-2-n-u.c [2022-01-09 23:13:00,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8b05d14/a9015e8724824d26b845142114bec3fb/FLAGbb96ae5a7 [2022-01-09 23:13:00,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8b05d14/a9015e8724824d26b845142114bec3fb [2022-01-09 23:13:00,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:13:00,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:13:00,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:13:00,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:13:00,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:13:00,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fb3b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00, skipping insertion in model container [2022-01-09 23:13:00,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:13:00,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:13:00,805 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-multidimensional/diff-2-n-u.c[322,335] [2022-01-09 23:13:00,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:13:00,841 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:13:00,852 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-multidimensional/diff-2-n-u.c[322,335] [2022-01-09 23:13:00,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:13:00,878 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:13:00,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00 WrapperNode [2022-01-09 23:13:00,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:13:00,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:13:00,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:13:00,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:13:00,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,910 INFO L137 Inliner]: procedures = 14, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2022-01-09 23:13:00,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:13:00,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:13:00,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:13:00,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:13:00,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:13:00,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:13:00,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:13:00,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:13:00,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (1/1) ... [2022-01-09 23:13:00,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:13:00,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:00,967 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) [2022-01-09 23:13:00,973 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 [2022-01-09 23:13:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:13:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:13:01,050 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:13:01,051 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:13:01,176 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:13:01,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:13:01,181 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-09 23:13:01,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:13:01 BoogieIcfgContainer [2022-01-09 23:13:01,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:13:01,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:13:01,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:13:01,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:13:01,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:13:00" (1/3) ... [2022-01-09 23:13:01,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2aa708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:13:01, skipping insertion in model container [2022-01-09 23:13:01,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:13:00" (2/3) ... [2022-01-09 23:13:01,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2aa708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:13:01, skipping insertion in model container [2022-01-09 23:13:01,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:13:01" (3/3) ... [2022-01-09 23:13:01,190 INFO L111 eAbstractionObserver]: Analyzing ICFG diff-2-n-u.c [2022-01-09 23:13:01,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:13:01,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:13:01,233 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:13:01,239 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 [2022-01-09 23:13:01,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:13:01,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 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) [2022-01-09 23:13:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-09 23:13:01,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:13:01,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:13:01,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:13:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:13:01,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1352657881, now seen corresponding path program 1 times [2022-01-09 23:13:01,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:13:01,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185051664] [2022-01-09 23:13:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:01,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:13:01,354 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:13:01,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857214812] [2022-01-09 23:13:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:01,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:01,357 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) [2022-01-09 23:13:01,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:13:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:13:01,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:13:01,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:13:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:13:01,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:13:01,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:13:01,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185051664] [2022-01-09 23:13:01,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:13:01,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857214812] [2022-01-09 23:13:01,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857214812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:13:01,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:13:01,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:13:01,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805941718] [2022-01-09 23:13:01,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:13:01,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:13:01,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:13:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:13:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:13:01,596 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 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) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:13:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:13:01,668 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2022-01-09 23:13:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:13:01,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-09 23:13:01,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:13:01,676 INFO L225 Difference]: With dead ends: 51 [2022-01-09 23:13:01,677 INFO L226 Difference]: Without dead ends: 24 [2022-01-09 23:13:01,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:13:01,683 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:13:01,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:13:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-09 23:13:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-01-09 23:13:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 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) [2022-01-09 23:13:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-01-09 23:13:01,712 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 12 [2022-01-09 23:13:01,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:13:01,713 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-01-09 23:13:01,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:13:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2022-01-09 23:13:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-09 23:13:01,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:13:01,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:13:01,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 23:13:01,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-09 23:13:01,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:13:01,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:13:01,938 INFO L85 PathProgramCache]: Analyzing trace with hash -68107374, now seen corresponding path program 1 times [2022-01-09 23:13:01,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:13:01,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918712065] [2022-01-09 23:13:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:01,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:13:01,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:13:01,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403119531] [2022-01-09 23:13:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:01,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:01,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:01,965 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) [2022-01-09 23:13:01,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 23:13:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:13:02,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:13:02,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:13:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:13:02,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:13:02,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:13:02,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918712065] [2022-01-09 23:13:02,095 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:13:02,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403119531] [2022-01-09 23:13:02,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403119531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:13:02,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:13:02,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:13:02,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781357344] [2022-01-09 23:13:02,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:13:02,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:13:02,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:13:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:13:02,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:13:02,102 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-01-09 23:13:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:13:02,155 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2022-01-09 23:13:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:13:02,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 [2022-01-09 23:13:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:13:02,162 INFO L225 Difference]: With dead ends: 54 [2022-01-09 23:13:02,166 INFO L226 Difference]: Without dead ends: 35 [2022-01-09 23:13:02,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:13:02,167 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:13:02,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 30 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:13:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-09 23:13:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2022-01-09 23:13:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 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) [2022-01-09 23:13:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-01-09 23:13:02,174 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 15 [2022-01-09 23:13:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:13:02,174 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-01-09 23:13:02,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-01-09 23:13:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-01-09 23:13:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-09 23:13:02,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:13:02,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:13:02,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-09 23:13:02,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-01-09 23:13:02,393 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:13:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:13:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1915152726, now seen corresponding path program 1 times [2022-01-09 23:13:02,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:13:02,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125881850] [2022-01-09 23:13:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:02,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:13:02,406 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:13:02,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715842075] [2022-01-09 23:13:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:02,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:02,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:02,411 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) [2022-01-09 23:13:02,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 23:13:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:13:02,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:13:02,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:13:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:13:02,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:13:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:13:02,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:13:02,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125881850] [2022-01-09 23:13:02,597 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:13:02,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715842075] [2022-01-09 23:13:02,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715842075] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:13:02,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:13:02,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-09 23:13:02,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934799773] [2022-01-09 23:13:02,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:13:02,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 23:13:02,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:13:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 23:13:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-09 23:13:02,599 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2022-01-09 23:13:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:13:02,746 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2022-01-09 23:13:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 23:13:02,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-09 23:13:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:13:02,749 INFO L225 Difference]: With dead ends: 78 [2022-01-09 23:13:02,749 INFO L226 Difference]: Without dead ends: 55 [2022-01-09 23:13:02,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-01-09 23:13:02,754 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:13:02,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 53 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:13:02,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-09 23:13:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2022-01-09 23:13:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 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) [2022-01-09 23:13:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2022-01-09 23:13:02,781 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 16 [2022-01-09 23:13:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:13:02,781 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2022-01-09 23:13:02,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2022-01-09 23:13:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2022-01-09 23:13:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-09 23:13:02,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:13:02,782 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:13:02,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 23:13:02,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:02,983 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:13:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:13:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash -349301614, now seen corresponding path program 2 times [2022-01-09 23:13:02,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:13:02,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205048850] [2022-01-09 23:13:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:02,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:13:02,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:13:02,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030400403] [2022-01-09 23:13:02,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:13:02,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:02,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:03,000 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) [2022-01-09 23:13:03,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 23:13:03,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-09 23:13:03,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:13:03,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:13:03,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:13:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-09 23:13:03,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:13:03,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:13:03,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205048850] [2022-01-09 23:13:03,140 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:13:03,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030400403] [2022-01-09 23:13:03,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030400403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:13:03,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:13:03,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:13:03,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341840706] [2022-01-09 23:13:03,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:13:03,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:13:03,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:13:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:13:03,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:13:03,142 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:13:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:13:03,209 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2022-01-09 23:13:03,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:13:03,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-09 23:13:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:13:03,213 INFO L225 Difference]: With dead ends: 107 [2022-01-09 23:13:03,214 INFO L226 Difference]: Without dead ends: 81 [2022-01-09 23:13:03,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:13:03,219 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:13:03,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 23 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:13:03,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-09 23:13:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 46. [2022-01-09 23:13:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 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) [2022-01-09 23:13:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-01-09 23:13:03,243 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 19 [2022-01-09 23:13:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:13:03,246 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-01-09 23:13:03,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:13:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-01-09 23:13:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-09 23:13:03,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:13:03,249 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:13:03,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 23:13:03,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:03,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:13:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:13:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1717790278, now seen corresponding path program 1 times [2022-01-09 23:13:03,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:13:03,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367346577] [2022-01-09 23:13:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:03,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:13:03,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:13:03,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132533495] [2022-01-09 23:13:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:03,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:03,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:03,496 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) [2022-01-09 23:13:03,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 23:13:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:13:03,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 23:13:03,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:13:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-09 23:13:03,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:13:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-09 23:13:03,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:13:03,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367346577] [2022-01-09 23:13:03,840 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:13:03,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132533495] [2022-01-09 23:13:03,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132533495] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:13:03,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:13:03,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-01-09 23:13:03,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519149137] [2022-01-09 23:13:03,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:13:03,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-09 23:13:03,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:13:03,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-09 23:13:03,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-01-09 23:13:03,843 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 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) [2022-01-09 23:13:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:13:04,113 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2022-01-09 23:13:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 23:13:04,114 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 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) Word has length 33 [2022-01-09 23:13:04,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:13:04,115 INFO L225 Difference]: With dead ends: 144 [2022-01-09 23:13:04,115 INFO L226 Difference]: Without dead ends: 101 [2022-01-09 23:13:04,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-01-09 23:13:04,116 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 155 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:13:04,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 64 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 23:13:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-09 23:13:04,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 82. [2022-01-09 23:13:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 81 states have internal predecessors, (98), 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) [2022-01-09 23:13:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2022-01-09 23:13:04,131 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 33 [2022-01-09 23:13:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:13:04,131 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2022-01-09 23:13:04,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 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) [2022-01-09 23:13:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2022-01-09 23:13:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-09 23:13:04,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:13:04,133 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:13:04,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-09 23:13:04,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:04,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:13:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:13:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash 835130118, now seen corresponding path program 2 times [2022-01-09 23:13:04,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:13:04,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529298245] [2022-01-09 23:13:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:04,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:13:04,375 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:13:04,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3158358] [2022-01-09 23:13:04,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:13:04,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:04,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:04,377 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) [2022-01-09 23:13:04,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 23:13:04,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:13:04,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:13:04,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-09 23:13:04,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:13:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-09 23:13:04,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:13:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-09 23:13:05,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:13:05,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529298245] [2022-01-09 23:13:05,019 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:13:05,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3158358] [2022-01-09 23:13:05,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3158358] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:13:05,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:13:05,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-01-09 23:13:05,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316803398] [2022-01-09 23:13:05,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:13:05,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-09 23:13:05,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:13:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-09 23:13:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-01-09 23:13:05,021 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) [2022-01-09 23:13:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:13:05,633 INFO L93 Difference]: Finished difference Result 276 states and 347 transitions. [2022-01-09 23:13:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-09 23:13:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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 51 [2022-01-09 23:13:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:13:05,634 INFO L225 Difference]: With dead ends: 276 [2022-01-09 23:13:05,635 INFO L226 Difference]: Without dead ends: 197 [2022-01-09 23:13:05,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2022-01-09 23:13:05,636 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 390 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 23:13:05,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 99 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-09 23:13:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-01-09 23:13:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 154. [2022-01-09 23:13:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.1895424836601307) internal successors, (182), 153 states have internal predecessors, (182), 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) [2022-01-09 23:13:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2022-01-09 23:13:05,659 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 51 [2022-01-09 23:13:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:13:05,659 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2022-01-09 23:13:05,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) [2022-01-09 23:13:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2022-01-09 23:13:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-09 23:13:05,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:13:05,660 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:13:05,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-09 23:13:05,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:05,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:13:05,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:13:05,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1578720390, now seen corresponding path program 3 times [2022-01-09 23:13:05,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:13:05,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243173331] [2022-01-09 23:13:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:05,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:13:05,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:13:05,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23582947] [2022-01-09 23:13:05,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:13:05,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:05,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:13:05,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-09 23:13:06,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-09 23:13:06,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:13:06,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:13:06,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:13:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2022-01-09 23:13:06,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:13:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2022-01-09 23:13:06,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:13:06,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243173331] [2022-01-09 23:13:06,595 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:13:06,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23582947] [2022-01-09 23:13:06,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23582947] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:13:06,595 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:13:06,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-09 23:13:06,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786902028] [2022-01-09 23:13:06,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:13:06,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 23:13:06,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:13:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 23:13:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-09 23:13:06,598 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 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) [2022-01-09 23:13:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:13:06,766 INFO L93 Difference]: Finished difference Result 719 states and 857 transitions. [2022-01-09 23:13:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 23:13:06,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 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 87 [2022-01-09 23:13:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:13:06,769 INFO L225 Difference]: With dead ends: 719 [2022-01-09 23:13:06,769 INFO L226 Difference]: Without dead ends: 593 [2022-01-09 23:13:06,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-01-09 23:13:06,773 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 124 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:13:06,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 41 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:13:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-01-09 23:13:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 379. [2022-01-09 23:13:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.1005291005291005) internal successors, (416), 378 states have internal predecessors, (416), 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) [2022-01-09 23:13:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 416 transitions. [2022-01-09 23:13:06,845 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 416 transitions. Word has length 87 [2022-01-09 23:13:06,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:13:06,845 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 416 transitions. [2022-01-09 23:13:06,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 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) [2022-01-09 23:13:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 416 transitions. [2022-01-09 23:13:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-01-09 23:13:06,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:13:06,850 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 88, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:13:06,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-09 23:13:07,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:07,074 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:13:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:13:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1409403239, now seen corresponding path program 4 times [2022-01-09 23:13:07,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:13:07,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951417510] [2022-01-09 23:13:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:13:07,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:13:07,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:13:07,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511237911] [2022-01-09 23:13:07,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 23:13:07,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:13:07,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:13:07,214 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:13:07,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process