/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_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:49:10,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:49:10,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:49:10,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:49:10,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:49:10,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:49:10,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:49:10,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:49:10,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:49:10,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:49:10,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:49:10,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:49:10,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:49:10,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:49:10,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:49:10,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:49:10,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:49:10,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:49:10,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:49:10,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:49:10,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:49:10,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:49:10,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:49:10,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:49:10,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:49:10,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:49:10,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:49:10,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:49:10,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:49:10,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:49:10,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:49:10,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:49:10,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:49:10,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:49:10,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:49:10,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:49:10,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:49:10,382 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:49:10,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:49:10,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:49:10,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:49:10,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:49:10,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:49:10,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:49:10,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:49:10,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:49:10,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:49:10,385 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:49:10,386 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:49:10,386 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:49:10,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:49:10,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:49:10,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:49:10,386 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:49:10,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:49:10,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:49:10,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:49:10,594 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:49:10,594 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:49:10,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c [2022-01-10 07:49:10,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70626e2a/ea41d6bc3122453e902e12d5e0cac600/FLAGd2e5b8cd5 [2022-01-10 07:49:11,272 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:49:11,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c [2022-01-10 07:49:11,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70626e2a/ea41d6bc3122453e902e12d5e0cac600/FLAGd2e5b8cd5 [2022-01-10 07:49:11,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70626e2a/ea41d6bc3122453e902e12d5e0cac600 [2022-01-10 07:49:11,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:49:11,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:49:11,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:49:11,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:49:11,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:49:11,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:11" (1/1) ... [2022-01-10 07:49:11,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30aa6b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:11, skipping insertion in model container [2022-01-10 07:49:11,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:11" (1/1) ... [2022-01-10 07:49:11,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:49:11,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:49:12,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c[377612,377625] [2022-01-10 07:49:12,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c[383339,383352] [2022-01-10 07:49:13,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:49:13,101 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:49:13,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c[377612,377625] [2022-01-10 07:49:13,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c[383339,383352] [2022-01-10 07:49:13,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:49:13,801 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:49:13,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13 WrapperNode [2022-01-10 07:49:13,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:49:13,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:49:13,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:49:13,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:49:13,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:13,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,146 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12709 [2022-01-10 07:49:14,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:49:14,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:49:14,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:49:14,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:49:14,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:49:14,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:49:14,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:49:14,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:49:14,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (1/1) ... [2022-01-10 07:49:14,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:49:14,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:49:14,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:49:14,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:49:14,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:49:14,600 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:49:14,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:49:14,600 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:49:14,600 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:49:14,600 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:49:14,600 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:49:14,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:49:14,601 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:49:14,601 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:49:14,601 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:49:14,601 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:49:14,601 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:49:14,601 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:49:14,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:49:14,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:49:14,677 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:49:14,678 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:49:21,002 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:49:21,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:49:21,025 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 07:49:21,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:21 BoogieIcfgContainer [2022-01-10 07:49:21,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:49:21,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:49:21,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:49:21,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:49:21,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:49:11" (1/3) ... [2022-01-10 07:49:21,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e75b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:49:21, skipping insertion in model container [2022-01-10 07:49:21,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:13" (2/3) ... [2022-01-10 07:49:21,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e75b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:49:21, skipping insertion in model container [2022-01-10 07:49:21,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:21" (3/3) ... [2022-01-10 07:49:21,033 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.04.cil-1.c [2022-01-10 07:49:21,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:49:21,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:49:21,074 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:49:21,093 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:49:21,093 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:49:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-10 07:49:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:21,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:21,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:21,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:21,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-01-10 07:49:21,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:21,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360330539] [2022-01-10 07:49:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:21,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:21,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:21,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:21,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:49:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:21,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:21,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:21,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:21,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:21,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360330539] [2022-01-10 07:49:21,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360330539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:21,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:21,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:21,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050523176] [2022-01-10 07:49:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:21,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:21,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:21,595 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:21,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:21,730 INFO L93 Difference]: Finished difference Result 4724 states and 8731 transitions. [2022-01-10 07:49:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:21,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:21,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:21,749 INFO L225 Difference]: With dead ends: 4724 [2022-01-10 07:49:21,749 INFO L226 Difference]: Without dead ends: 2298 [2022-01-10 07:49:21,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:21,762 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 263 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 8314 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:21,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 8314 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-01-10 07:49:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2298. [2022-01-10 07:49:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-10 07:49:21,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-01-10 07:49:21,856 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-01-10 07:49:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:21,856 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-01-10 07:49:21,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-01-10 07:49:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:21,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:21,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:21,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:22,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:22,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-01-10 07:49:22,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:22,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031222028] [2022-01-10 07:49:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:22,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:22,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:22,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:22,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:49:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:22,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:22,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:22,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:22,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031222028] [2022-01-10 07:49:22,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031222028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:22,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:22,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:22,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693027554] [2022-01-10 07:49:22,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:22,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:22,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:22,440 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:22,777 INFO L93 Difference]: Finished difference Result 2644 states and 4754 transitions. [2022-01-10 07:49:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:22,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:22,787 INFO L225 Difference]: With dead ends: 2644 [2022-01-10 07:49:22,787 INFO L226 Difference]: Without dead ends: 2479 [2022-01-10 07:49:22,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:22,789 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4425 mSDsluCounter, 8425 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 12667 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:22,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4437 Valid, 12667 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:49:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-01-10 07:49:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2466. [2022-01-10 07:49:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:49:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4479 transitions. [2022-01-10 07:49:22,829 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4479 transitions. Word has length 90 [2022-01-10 07:49:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:22,830 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4479 transitions. [2022-01-10 07:49:22,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4479 transitions. [2022-01-10 07:49:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:22,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:22,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:22,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:23,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:23,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:23,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-01-10 07:49:23,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:23,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455057312] [2022-01-10 07:49:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:23,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:23,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:23,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:23,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:49:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:23,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:23,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:23,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:23,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:23,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455057312] [2022-01-10 07:49:23,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455057312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:23,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:23,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:23,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617807833] [2022-01-10 07:49:23,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:23,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:23,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:23,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:23,272 INFO L87 Difference]: Start difference. First operand 2466 states and 4479 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:23,493 INFO L93 Difference]: Finished difference Result 2799 states and 4989 transitions. [2022-01-10 07:49:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:23,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:23,501 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:49:23,501 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:49:23,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:23,503 INFO L933 BasicCegarLoop]: 4200 mSDtfsCounter, 4294 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 12393 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:23,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 12393 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:23,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:49:23,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:49:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.821900826446281) internal successors, (4409), 2423 states have internal predecessors, (4409), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:49:23,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4472 transitions. [2022-01-10 07:49:23,543 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4472 transitions. Word has length 90 [2022-01-10 07:49:23,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:23,543 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4472 transitions. [2022-01-10 07:49:23,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:23,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4472 transitions. [2022-01-10 07:49:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:23,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:23,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:23,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:23,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:23,753 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:23,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:23,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1092701226, now seen corresponding path program 1 times [2022-01-10 07:49:23,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:23,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020353647] [2022-01-10 07:49:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:23,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:23,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:23,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:23,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:49:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:23,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:23,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:23,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:23,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:23,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020353647] [2022-01-10 07:49:23,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020353647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:23,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:23,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:23,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411039486] [2022-01-10 07:49:23,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:23,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:23,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:23,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:23,979 INFO L87 Difference]: Start difference. First operand 2466 states and 4472 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:24,192 INFO L93 Difference]: Finished difference Result 2799 states and 4975 transitions. [2022-01-10 07:49:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:24,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:24,200 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:49:24,200 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:49:24,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:24,202 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 4288 mSDsluCounter, 8189 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4300 SdHoareTripleChecker+Valid, 12386 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:24,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4300 Valid, 12386 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:24,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:49:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:49:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.8190082644628098) internal successors, (4402), 2423 states have internal predecessors, (4402), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:49:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4465 transitions. [2022-01-10 07:49:24,245 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4465 transitions. Word has length 90 [2022-01-10 07:49:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:24,245 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4465 transitions. [2022-01-10 07:49:24,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4465 transitions. [2022-01-10 07:49:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:24,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:24,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:24,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 07:49:24,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:24,453 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:24,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:24,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1291223512, now seen corresponding path program 1 times [2022-01-10 07:49:24,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:24,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118107565] [2022-01-10 07:49:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:24,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:24,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:24,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:24,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:49:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:24,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:24,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:24,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:24,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:24,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118107565] [2022-01-10 07:49:24,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118107565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:24,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:24,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:24,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757839454] [2022-01-10 07:49:24,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:24,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:24,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:24,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:24,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:24,754 INFO L87 Difference]: Start difference. First operand 2466 states and 4465 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:24,970 INFO L93 Difference]: Finished difference Result 2799 states and 4961 transitions. [2022-01-10 07:49:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:24,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:24,977 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:49:24,978 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:49:24,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:24,979 INFO L933 BasicCegarLoop]: 4194 mSDtfsCounter, 4282 mSDsluCounter, 8185 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 12379 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:24,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4294 Valid, 12379 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:49:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:49:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.8161157024793388) internal successors, (4395), 2423 states have internal predecessors, (4395), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:49:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4458 transitions. [2022-01-10 07:49:25,030 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4458 transitions. Word has length 90 [2022-01-10 07:49:25,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:25,030 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4458 transitions. [2022-01-10 07:49:25,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4458 transitions. [2022-01-10 07:49:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:25,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:25,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:25,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:25,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:25,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1430163924, now seen corresponding path program 1 times [2022-01-10 07:49:25,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:25,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819129692] [2022-01-10 07:49:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:25,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:25,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:25,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:25,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:49:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:25,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:25,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:25,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:25,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:25,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819129692] [2022-01-10 07:49:25,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819129692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:25,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:25,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:25,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113706852] [2022-01-10 07:49:25,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:25,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:25,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:25,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:25,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:25,460 INFO L87 Difference]: Start difference. First operand 2466 states and 4458 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:25,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:25,755 INFO L93 Difference]: Finished difference Result 2879 states and 5069 transitions. [2022-01-10 07:49:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:25,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:25,763 INFO L225 Difference]: With dead ends: 2879 [2022-01-10 07:49:25,763 INFO L226 Difference]: Without dead ends: 2546 [2022-01-10 07:49:25,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:25,765 INFO L933 BasicCegarLoop]: 4191 mSDtfsCounter, 4321 mSDsluCounter, 8180 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4333 SdHoareTripleChecker+Valid, 12371 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:25,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4333 Valid, 12371 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2022-01-10 07:49:25,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2546. [2022-01-10 07:49:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2494 states have (on average 1.8003207698476342) internal successors, (4490), 2497 states have internal predecessors, (4490), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:49:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 4557 transitions. [2022-01-10 07:49:25,816 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 4557 transitions. Word has length 90 [2022-01-10 07:49:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:25,817 INFO L470 AbstractCegarLoop]: Abstraction has 2546 states and 4557 transitions. [2022-01-10 07:49:25,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 4557 transitions. [2022-01-10 07:49:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:25,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:25,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:25,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:26,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:26,024 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash -61826927, now seen corresponding path program 1 times [2022-01-10 07:49:26,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:26,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959899517] [2022-01-10 07:49:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:26,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:26,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:26,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:26,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:49:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:26,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:26,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:26,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:26,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:26,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959899517] [2022-01-10 07:49:26,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959899517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:26,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:26,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:26,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664473397] [2022-01-10 07:49:26,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:26,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:26,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:26,418 INFO L87 Difference]: Start difference. First operand 2546 states and 4557 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:26,677 INFO L93 Difference]: Finished difference Result 3039 states and 5267 transitions. [2022-01-10 07:49:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:26,685 INFO L225 Difference]: With dead ends: 3039 [2022-01-10 07:49:26,685 INFO L226 Difference]: Without dead ends: 2626 [2022-01-10 07:49:26,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:26,687 INFO L933 BasicCegarLoop]: 4189 mSDtfsCounter, 4314 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 12365 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:26,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 12365 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:26,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-10 07:49:26,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2022-01-10 07:49:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2568 states have (on average 1.783878504672897) internal successors, (4581), 2571 states have internal predecessors, (4581), 35 states have call successors, (35), 20 states have call predecessors, (35), 21 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 07:49:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4652 transitions. [2022-01-10 07:49:26,726 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 4652 transitions. Word has length 90 [2022-01-10 07:49:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:26,726 INFO L470 AbstractCegarLoop]: Abstraction has 2626 states and 4652 transitions. [2022-01-10 07:49:26,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 4652 transitions. [2022-01-10 07:49:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:26,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:26,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:26,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:26,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:26,935 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1935075861, now seen corresponding path program 1 times [2022-01-10 07:49:26,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287063584] [2022-01-10 07:49:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:26,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:26,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:26,952 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:26,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:49:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:27,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:27,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:27,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:27,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:27,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287063584] [2022-01-10 07:49:27,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287063584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:27,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:27,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:27,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794865612] [2022-01-10 07:49:27,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:27,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:27,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:27,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:27,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:27,154 INFO L87 Difference]: Start difference. First operand 2626 states and 4652 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:27,387 INFO L93 Difference]: Finished difference Result 3199 states and 5457 transitions. [2022-01-10 07:49:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:27,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:27,399 INFO L225 Difference]: With dead ends: 3199 [2022-01-10 07:49:27,399 INFO L226 Difference]: Without dead ends: 2706 [2022-01-10 07:49:27,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:27,404 INFO L933 BasicCegarLoop]: 4184 mSDtfsCounter, 4308 mSDsluCounter, 8172 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 12356 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:27,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4320 Valid, 12356 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-01-10 07:49:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2706. [2022-01-10 07:49:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2642 states have (on average 1.7668433005299016) internal successors, (4668), 2645 states have internal predecessors, (4668), 37 states have call successors, (37), 24 states have call predecessors, (37), 25 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:49:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4743 transitions. [2022-01-10 07:49:27,448 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4743 transitions. Word has length 90 [2022-01-10 07:49:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:27,449 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 4743 transitions. [2022-01-10 07:49:27,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4743 transitions. [2022-01-10 07:49:27,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:27,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:27,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:27,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:27,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:27,658 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:27,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash 281106770, now seen corresponding path program 1 times [2022-01-10 07:49:27,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:27,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877961670] [2022-01-10 07:49:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:27,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:27,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:27,660 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:27,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:49:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:27,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:27,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:27,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:27,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:27,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877961670] [2022-01-10 07:49:27,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877961670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:27,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:27,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:27,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732900001] [2022-01-10 07:49:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:27,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:27,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:27,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:27,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:27,862 INFO L87 Difference]: Start difference. First operand 2706 states and 4743 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:28,104 INFO L93 Difference]: Finished difference Result 3359 states and 5639 transitions. [2022-01-10 07:49:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:28,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:28,127 INFO L225 Difference]: With dead ends: 3359 [2022-01-10 07:49:28,127 INFO L226 Difference]: Without dead ends: 2786 [2022-01-10 07:49:28,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:28,131 INFO L933 BasicCegarLoop]: 4181 mSDtfsCounter, 4301 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4313 SdHoareTripleChecker+Valid, 12349 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:28,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4313 Valid, 12349 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:28,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2022-01-10 07:49:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2022-01-10 07:49:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2716 states have (on average 1.7492636229749632) internal successors, (4751), 2719 states have internal predecessors, (4751), 39 states have call successors, (39), 28 states have call predecessors, (39), 29 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:49:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4830 transitions. [2022-01-10 07:49:28,187 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4830 transitions. Word has length 90 [2022-01-10 07:49:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:28,187 INFO L470 AbstractCegarLoop]: Abstraction has 2786 states and 4830 transitions. [2022-01-10 07:49:28,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4830 transitions. [2022-01-10 07:49:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:28,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:28,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:28,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:49:28,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:28,396 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:28,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1386185175, now seen corresponding path program 1 times [2022-01-10 07:49:28,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:28,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676457532] [2022-01-10 07:49:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:28,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:28,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:28,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:28,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:49:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:28,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:28,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:28,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:28,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676457532] [2022-01-10 07:49:28,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676457532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:28,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:28,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:28,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866345638] [2022-01-10 07:49:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:28,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:28,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:28,642 INFO L87 Difference]: Start difference. First operand 2786 states and 4830 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:28,839 INFO L93 Difference]: Finished difference Result 3513 states and 5805 transitions. [2022-01-10 07:49:28,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:28,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:28,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:28,846 INFO L225 Difference]: With dead ends: 3513 [2022-01-10 07:49:28,846 INFO L226 Difference]: Without dead ends: 2860 [2022-01-10 07:49:28,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:28,848 INFO L933 BasicCegarLoop]: 4178 mSDtfsCounter, 4294 mSDsluCounter, 8164 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 12342 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:28,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 12342 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-01-10 07:49:28,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2860. [2022-01-10 07:49:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2788 states have (on average 1.7317073170731707) internal successors, (4828), 2791 states have internal predecessors, (4828), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:49:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4907 transitions. [2022-01-10 07:49:28,898 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4907 transitions. Word has length 90 [2022-01-10 07:49:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:28,898 INFO L470 AbstractCegarLoop]: Abstraction has 2860 states and 4907 transitions. [2022-01-10 07:49:28,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4907 transitions. [2022-01-10 07:49:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:28,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:28,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:28,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:29,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:29,126 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash -163430701, now seen corresponding path program 1 times [2022-01-10 07:49:29,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:29,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782775420] [2022-01-10 07:49:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:29,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:29,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:29,128 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:29,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:49:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:29,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:29,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:29,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:29,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:29,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782775420] [2022-01-10 07:49:29,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782775420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:29,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:29,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:29,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028712899] [2022-01-10 07:49:29,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:29,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:29,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:29,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:29,329 INFO L87 Difference]: Start difference. First operand 2860 states and 4907 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:29,397 INFO L93 Difference]: Finished difference Result 3712 states and 6020 transitions. [2022-01-10 07:49:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:29,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:29,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:29,404 INFO L225 Difference]: With dead ends: 3712 [2022-01-10 07:49:29,404 INFO L226 Difference]: Without dead ends: 2986 [2022-01-10 07:49:29,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:49:29,407 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 166 mSDsluCounter, 12650 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 16847 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:29,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 16847 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2022-01-10 07:49:29,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2866. [2022-01-10 07:49:29,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2794 states have (on average 1.72655690765927) internal successors, (4824), 2797 states have internal predecessors, (4824), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:49:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4903 transitions. [2022-01-10 07:49:29,465 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4903 transitions. Word has length 90 [2022-01-10 07:49:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:29,465 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 4903 transitions. [2022-01-10 07:49:29,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:29,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4903 transitions. [2022-01-10 07:49:29,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:29,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:29,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:29,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:29,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:29,673 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:29,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:29,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1097486549, now seen corresponding path program 1 times [2022-01-10 07:49:29,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:29,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657406774] [2022-01-10 07:49:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:29,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:29,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:29,677 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:29,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:49:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:29,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:29,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:29,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:29,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:29,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657406774] [2022-01-10 07:49:29,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657406774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:29,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:29,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:29,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595256815] [2022-01-10 07:49:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:29,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:29,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:29,880 INFO L87 Difference]: Start difference. First operand 2866 states and 4903 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:30,029 INFO L93 Difference]: Finished difference Result 3696 states and 5976 transitions. [2022-01-10 07:49:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:30,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:30,036 INFO L225 Difference]: With dead ends: 3696 [2022-01-10 07:49:30,036 INFO L226 Difference]: Without dead ends: 2964 [2022-01-10 07:49:30,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:49:30,038 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 127 mSDsluCounter, 12635 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 16832 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:30,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 16832 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-01-10 07:49:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2872. [2022-01-10 07:49:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2800 states have (on average 1.7214285714285715) internal successors, (4820), 2803 states have internal predecessors, (4820), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:49:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 4899 transitions. [2022-01-10 07:49:30,104 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 4899 transitions. Word has length 90 [2022-01-10 07:49:30,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:30,104 INFO L470 AbstractCegarLoop]: Abstraction has 2872 states and 4899 transitions. [2022-01-10 07:49:30,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 4899 transitions. [2022-01-10 07:49:30,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:30,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:30,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:30,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:30,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:30,312 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:30,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash -931099561, now seen corresponding path program 1 times [2022-01-10 07:49:30,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:30,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504600546] [2022-01-10 07:49:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:30,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:30,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:30,314 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:30,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:49:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:30,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:30,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:30,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:30,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:30,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504600546] [2022-01-10 07:49:30,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504600546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:30,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:30,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:30,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323776670] [2022-01-10 07:49:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:30,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:30,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:30,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:30,513 INFO L87 Difference]: Start difference. First operand 2872 states and 4899 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:30,591 INFO L93 Difference]: Finished difference Result 3680 states and 5932 transitions. [2022-01-10 07:49:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:30,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:30,596 INFO L225 Difference]: With dead ends: 3680 [2022-01-10 07:49:30,596 INFO L226 Difference]: Without dead ends: 2942 [2022-01-10 07:49:30,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:49:30,599 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 88 mSDsluCounter, 12620 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 16817 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:30,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 16817 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2022-01-10 07:49:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2878. [2022-01-10 07:49:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2806 states have (on average 1.7163221667854598) internal successors, (4816), 2809 states have internal predecessors, (4816), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:49:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4895 transitions. [2022-01-10 07:49:30,660 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4895 transitions. Word has length 90 [2022-01-10 07:49:30,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:30,661 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 4895 transitions. [2022-01-10 07:49:30,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4895 transitions. [2022-01-10 07:49:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:30,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:30,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:30,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:30,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:30,869 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:30,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash -37613223, now seen corresponding path program 1 times [2022-01-10 07:49:30,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:30,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338572202] [2022-01-10 07:49:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:30,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:30,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:30,871 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:30,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:49:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:30,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:30,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:31,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:31,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:31,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338572202] [2022-01-10 07:49:31,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338572202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:31,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:31,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:31,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053280447] [2022-01-10 07:49:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:31,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:31,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:31,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:31,065 INFO L87 Difference]: Start difference. First operand 2878 states and 4895 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:31,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:31,144 INFO L93 Difference]: Finished difference Result 3664 states and 5888 transitions. [2022-01-10 07:49:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:31,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:31,150 INFO L225 Difference]: With dead ends: 3664 [2022-01-10 07:49:31,150 INFO L226 Difference]: Without dead ends: 2920 [2022-01-10 07:49:31,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:49:31,152 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 49 mSDsluCounter, 12605 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16802 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:31,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 16802 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2022-01-10 07:49:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2884. [2022-01-10 07:49:31,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2812 states have (on average 1.7112375533428166) internal successors, (4812), 2815 states have internal predecessors, (4812), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:49:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4891 transitions. [2022-01-10 07:49:31,213 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4891 transitions. Word has length 90 [2022-01-10 07:49:31,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:31,213 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 4891 transitions. [2022-01-10 07:49:31,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:31,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4891 transitions. [2022-01-10 07:49:31,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:31,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:31,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:31,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:31,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:31,421 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:31,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:31,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1882980389, now seen corresponding path program 1 times [2022-01-10 07:49:31,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:31,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307079042] [2022-01-10 07:49:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:31,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:31,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:31,423 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:31,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:49:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:31,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:31,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:31,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:31,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:31,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307079042] [2022-01-10 07:49:31,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307079042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:31,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:31,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:31,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749982989] [2022-01-10 07:49:31,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:31,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:31,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:31,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:31,661 INFO L87 Difference]: Start difference. First operand 2884 states and 4891 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:31,870 INFO L93 Difference]: Finished difference Result 3635 states and 5813 transitions. [2022-01-10 07:49:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:31,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:49:31,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:31,876 INFO L225 Difference]: With dead ends: 3635 [2022-01-10 07:49:31,876 INFO L226 Difference]: Without dead ends: 2884 [2022-01-10 07:49:31,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:31,878 INFO L933 BasicCegarLoop]: 4176 mSDtfsCounter, 4208 mSDsluCounter, 8161 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 12337 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:31,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4219 Valid, 12337 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-01-10 07:49:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2022-01-10 07:49:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2812 states have (on average 1.7087482219061167) internal successors, (4805), 2815 states have internal predecessors, (4805), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:49:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4884 transitions. [2022-01-10 07:49:31,939 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4884 transitions. Word has length 90 [2022-01-10 07:49:31,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:31,940 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 4884 transitions. [2022-01-10 07:49:31,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4884 transitions. [2022-01-10 07:49:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:49:31,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:31,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:31,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:32,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:32,148 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1742431779, now seen corresponding path program 1 times [2022-01-10 07:49:32,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:32,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040041262] [2022-01-10 07:49:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:32,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:32,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:32,150 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:32,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:49:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:32,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:32,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:32,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:32,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:32,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040041262] [2022-01-10 07:49:32,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040041262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:32,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:32,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:49:32,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885544221] [2022-01-10 07:49:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:32,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:32,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:32,406 INFO L87 Difference]: Start difference. First operand 2884 states and 4884 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:49:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:32,570 INFO L93 Difference]: Finished difference Result 4357 states and 6685 transitions. [2022-01-10 07:49:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:32,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2022-01-10 07:49:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:32,594 INFO L225 Difference]: With dead ends: 4357 [2022-01-10 07:49:32,594 INFO L226 Difference]: Without dead ends: 3607 [2022-01-10 07:49:32,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:32,598 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4099 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4099 SdHoareTripleChecker+Valid, 4452 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:32,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4099 Valid, 4452 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2022-01-10 07:49:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3605. [2022-01-10 07:49:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3605 states, 3467 states have (on average 1.6120565330256706) internal successors, (5589), 3473 states have internal predecessors, (5589), 74 states have call successors, (74), 60 states have call predecessors, (74), 62 states have return successors, (76), 72 states have call predecessors, (76), 74 states have call successors, (76) [2022-01-10 07:49:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5739 transitions. [2022-01-10 07:49:32,788 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5739 transitions. Word has length 90 [2022-01-10 07:49:32,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:32,789 INFO L470 AbstractCegarLoop]: Abstraction has 3605 states and 5739 transitions. [2022-01-10 07:49:32,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:49:32,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5739 transitions. [2022-01-10 07:49:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 07:49:32,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:32,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:32,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:32,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:32,991 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:32,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:32,992 INFO L85 PathProgramCache]: Analyzing trace with hash 502002518, now seen corresponding path program 1 times [2022-01-10 07:49:32,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:32,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656054753] [2022-01-10 07:49:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:32,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:32,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:32,993 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:32,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:49:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:33,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:33,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:49:33,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:33,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:33,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656054753] [2022-01-10 07:49:33,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656054753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:33,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:33,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:33,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920811920] [2022-01-10 07:49:33,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:33,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:33,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:33,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:33,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:33,313 INFO L87 Difference]: Start difference. First operand 3605 states and 5739 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:33,680 INFO L93 Difference]: Finished difference Result 6427 states and 9125 transitions. [2022-01-10 07:49:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:33,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 146 [2022-01-10 07:49:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:33,689 INFO L225 Difference]: With dead ends: 6427 [2022-01-10 07:49:33,689 INFO L226 Difference]: Without dead ends: 4957 [2022-01-10 07:49:33,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:33,691 INFO L933 BasicCegarLoop]: 4227 mSDtfsCounter, 4241 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 8502 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:33,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4247 Valid, 8502 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2022-01-10 07:49:33,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4955. [2022-01-10 07:49:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4955 states, 4693 states have (on average 1.5020242914979758) internal successors, (7049), 4707 states have internal predecessors, (7049), 136 states have call successors, (136), 112 states have call predecessors, (136), 124 states have return successors, (160), 136 states have call predecessors, (160), 136 states have call successors, (160) [2022-01-10 07:49:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4955 states to 4955 states and 7345 transitions. [2022-01-10 07:49:33,811 INFO L78 Accepts]: Start accepts. Automaton has 4955 states and 7345 transitions. Word has length 146 [2022-01-10 07:49:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:33,811 INFO L470 AbstractCegarLoop]: Abstraction has 4955 states and 7345 transitions. [2022-01-10 07:49:33,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4955 states and 7345 transitions. [2022-01-10 07:49:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 07:49:33,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:33,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:33,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 07:49:34,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:34,021 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash 867765611, now seen corresponding path program 1 times [2022-01-10 07:49:34,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:34,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735617976] [2022-01-10 07:49:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:34,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:34,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:34,032 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:34,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:49:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:34,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:34,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:49:34,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:34,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:34,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735617976] [2022-01-10 07:49:34,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735617976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:34,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:34,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:34,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9902789] [2022-01-10 07:49:34,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:34,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:34,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:34,364 INFO L87 Difference]: Start difference. First operand 4955 states and 7345 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:34,736 INFO L93 Difference]: Finished difference Result 10253 states and 13682 transitions. [2022-01-10 07:49:34,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:34,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 147 [2022-01-10 07:49:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:34,783 INFO L225 Difference]: With dead ends: 10253 [2022-01-10 07:49:34,783 INFO L226 Difference]: Without dead ends: 7433 [2022-01-10 07:49:34,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:34,791 INFO L933 BasicCegarLoop]: 4267 mSDtfsCounter, 4231 mSDsluCounter, 4307 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 8574 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:34,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 8574 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:34,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2022-01-10 07:49:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 7431. [2022-01-10 07:49:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7431 states, 6934 states have (on average 1.400922988174214) internal successors, (9714), 6965 states have internal predecessors, (9714), 255 states have call successors, (255), 208 states have call predecessors, (255), 240 states have return successors, (323), 259 states have call predecessors, (323), 255 states have call successors, (323) [2022-01-10 07:49:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7431 states to 7431 states and 10292 transitions. [2022-01-10 07:49:35,215 INFO L78 Accepts]: Start accepts. Automaton has 7431 states and 10292 transitions. Word has length 147 [2022-01-10 07:49:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:35,215 INFO L470 AbstractCegarLoop]: Abstraction has 7431 states and 10292 transitions. [2022-01-10 07:49:35,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7431 states and 10292 transitions. [2022-01-10 07:49:35,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 07:49:35,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:35,224 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:35,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:35,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:35,431 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash 937413485, now seen corresponding path program 1 times [2022-01-10 07:49:35,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:35,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825495058] [2022-01-10 07:49:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:35,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:35,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:35,447 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:35,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:49:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:35,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:35,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:49:35,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:35,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:35,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825495058] [2022-01-10 07:49:35,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825495058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:35,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:35,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:35,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144983511] [2022-01-10 07:49:35,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:35,731 INFO L87 Difference]: Start difference. First operand 7431 states and 10292 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:36,027 INFO L93 Difference]: Finished difference Result 12721 states and 16593 transitions. [2022-01-10 07:49:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:36,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-01-10 07:49:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:36,041 INFO L225 Difference]: With dead ends: 12721 [2022-01-10 07:49:36,041 INFO L226 Difference]: Without dead ends: 7425 [2022-01-10 07:49:36,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:36,049 INFO L933 BasicCegarLoop]: 4195 mSDtfsCounter, 229 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 8153 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:36,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 8153 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2022-01-10 07:49:36,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7425. [2022-01-10 07:49:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7425 states, 6931 states have (on average 1.4006636848939547) internal successors, (9708), 6961 states have internal predecessors, (9708), 252 states have call successors, (252), 208 states have call predecessors, (252), 240 states have return successors, (320), 256 states have call predecessors, (320), 252 states have call successors, (320) [2022-01-10 07:49:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7425 states to 7425 states and 10280 transitions. [2022-01-10 07:49:36,276 INFO L78 Accepts]: Start accepts. Automaton has 7425 states and 10280 transitions. Word has length 147 [2022-01-10 07:49:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:36,276 INFO L470 AbstractCegarLoop]: Abstraction has 7425 states and 10280 transitions. [2022-01-10 07:49:36,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7425 states and 10280 transitions. [2022-01-10 07:49:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 07:49:36,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:36,280 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:36,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:36,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:36,488 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1954017798, now seen corresponding path program 1 times [2022-01-10 07:49:36,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:36,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887879603] [2022-01-10 07:49:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:36,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:36,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:36,490 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:36,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:49:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:36,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:36,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:49:36,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:36,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:36,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887879603] [2022-01-10 07:49:36,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887879603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:36,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:36,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:36,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853058914] [2022-01-10 07:49:36,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:36,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:36,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:36,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:36,792 INFO L87 Difference]: Start difference. First operand 7425 states and 10280 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:37,276 INFO L93 Difference]: Finished difference Result 17318 states and 22083 transitions. [2022-01-10 07:49:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:37,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 148 [2022-01-10 07:49:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:37,300 INFO L225 Difference]: With dead ends: 17318 [2022-01-10 07:49:37,300 INFO L226 Difference]: Without dead ends: 12028 [2022-01-10 07:49:37,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:37,311 INFO L933 BasicCegarLoop]: 4256 mSDtfsCounter, 4224 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 8540 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:37,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4230 Valid, 8540 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:37,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12028 states. [2022-01-10 07:49:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12028 to 12026. [2022-01-10 07:49:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12026 states, 11089 states have (on average 1.3204977906033006) internal successors, (14643), 11156 states have internal predecessors, (14643), 471 states have call successors, (471), 384 states have call predecessors, (471), 464 states have return successors, (635), 487 states have call predecessors, (635), 471 states have call successors, (635) [2022-01-10 07:49:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12026 states to 12026 states and 15749 transitions. [2022-01-10 07:49:37,715 INFO L78 Accepts]: Start accepts. Automaton has 12026 states and 15749 transitions. Word has length 148 [2022-01-10 07:49:37,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:37,715 INFO L470 AbstractCegarLoop]: Abstraction has 12026 states and 15749 transitions. [2022-01-10 07:49:37,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 12026 states and 15749 transitions. [2022-01-10 07:49:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 07:49:37,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:37,721 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:37,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-01-10 07:49:37,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:37,928 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:37,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1884369924, now seen corresponding path program 1 times [2022-01-10 07:49:37,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:37,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258639955] [2022-01-10 07:49:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:37,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:37,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:37,948 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:37,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:49:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:38,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:38,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:49:38,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:38,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:38,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258639955] [2022-01-10 07:49:38,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258639955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:38,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:38,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:38,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337621410] [2022-01-10 07:49:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:38,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:38,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:38,177 INFO L87 Difference]: Start difference. First operand 12026 states and 15749 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:38,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:38,620 INFO L93 Difference]: Finished difference Result 21912 states and 27510 transitions. [2022-01-10 07:49:38,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:38,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2022-01-10 07:49:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:38,741 INFO L225 Difference]: With dead ends: 21912 [2022-01-10 07:49:38,741 INFO L226 Difference]: Without dead ends: 12021 [2022-01-10 07:49:38,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:38,753 INFO L933 BasicCegarLoop]: 4194 mSDtfsCounter, 227 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 8152 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:38,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 8152 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12021 states. [2022-01-10 07:49:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12021 to 12021. [2022-01-10 07:49:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12021 states, 11087 states have (on average 1.3203752142148462) internal successors, (14639), 11153 states have internal predecessors, (14639), 468 states have call successors, (468), 384 states have call predecessors, (468), 464 states have return successors, (632), 484 states have call predecessors, (632), 468 states have call successors, (632) [2022-01-10 07:49:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 15739 transitions. [2022-01-10 07:49:39,166 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 15739 transitions. Word has length 148 [2022-01-10 07:49:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:39,166 INFO L470 AbstractCegarLoop]: Abstraction has 12021 states and 15739 transitions. [2022-01-10 07:49:39,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 15739 transitions. [2022-01-10 07:49:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 07:49:39,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:39,172 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:39,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:39,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:39,379 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 585316039, now seen corresponding path program 1 times [2022-01-10 07:49:39,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:39,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812924713] [2022-01-10 07:49:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:39,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:39,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:39,396 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:39,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:49:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:39,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:49:39,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:49:39,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:39,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812924713] [2022-01-10 07:49:39,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812924713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:39,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:39,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:39,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293682864] [2022-01-10 07:49:39,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:39,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:39,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:39,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:39,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:39,759 INFO L87 Difference]: Start difference. First operand 12021 states and 15739 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:40,528 INFO L93 Difference]: Finished difference Result 30933 states and 38141 transitions. [2022-01-10 07:49:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:40,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 149 [2022-01-10 07:49:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:40,573 INFO L225 Difference]: With dead ends: 30933 [2022-01-10 07:49:40,573 INFO L226 Difference]: Without dead ends: 21047 [2022-01-10 07:49:40,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:40,594 INFO L933 BasicCegarLoop]: 4252 mSDtfsCounter, 4224 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 8514 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:40,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4230 Valid, 8514 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:49:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21047 states. [2022-01-10 07:49:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21047 to 20821. [2022-01-10 07:49:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20821 states, 18828 states have (on average 1.2615253877204164) internal successors, (23752), 19103 states have internal predecessors, (23752), 871 states have call successors, (871), 704 states have call predecessors, (871), 1120 states have return successors, (1484), 1015 states have call predecessors, (1484), 871 states have call successors, (1484) [2022-01-10 07:49:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20821 states to 20821 states and 26107 transitions. [2022-01-10 07:49:41,568 INFO L78 Accepts]: Start accepts. Automaton has 20821 states and 26107 transitions. Word has length 149 [2022-01-10 07:49:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:41,568 INFO L470 AbstractCegarLoop]: Abstraction has 20821 states and 26107 transitions. [2022-01-10 07:49:41,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:49:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 20821 states and 26107 transitions. [2022-01-10 07:49:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 07:49:41,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:41,577 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:41,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:41,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:41,784 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 654963913, now seen corresponding path program 1 times [2022-01-10 07:49:41,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395728320] [2022-01-10 07:49:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:41,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:41,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:41,786 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:41,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:49:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:41,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:41,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:49:42,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:42,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:42,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395728320] [2022-01-10 07:49:42,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395728320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:42,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:42,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:42,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839540291] [2022-01-10 07:49:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:42,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:42,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:42,036 INFO L87 Difference]: Start difference. First operand 20821 states and 26107 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:42,905 INFO L93 Difference]: Finished difference Result 39504 states and 48230 transitions. [2022-01-10 07:49:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:42,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2022-01-10 07:49:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:42,943 INFO L225 Difference]: With dead ends: 39504 [2022-01-10 07:49:42,943 INFO L226 Difference]: Without dead ends: 20817 [2022-01-10 07:49:42,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:42,963 INFO L933 BasicCegarLoop]: 4193 mSDtfsCounter, 225 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 8151 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:42,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 8151 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20817 states. [2022-01-10 07:49:43,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20817 to 20817. [2022-01-10 07:49:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20817 states, 18827 states have (on average 1.2614861634886068) internal successors, (23750), 19101 states have internal predecessors, (23750), 868 states have call successors, (868), 704 states have call predecessors, (868), 1120 states have return successors, (1480), 1012 states have call predecessors, (1480), 868 states have call successors, (1480) [2022-01-10 07:49:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20817 states to 20817 states and 26098 transitions. [2022-01-10 07:49:43,807 INFO L78 Accepts]: Start accepts. Automaton has 20817 states and 26098 transitions. Word has length 149 [2022-01-10 07:49:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:43,807 INFO L470 AbstractCegarLoop]: Abstraction has 20817 states and 26098 transitions. [2022-01-10 07:49:43,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:49:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 20817 states and 26098 transitions. [2022-01-10 07:49:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 07:49:43,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:43,815 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:43,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:49:44,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:44,022 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:44,022 INFO L85 PathProgramCache]: Analyzing trace with hash 881078430, now seen corresponding path program 1 times [2022-01-10 07:49:44,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:44,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962889955] [2022-01-10 07:49:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:44,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:44,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:44,026 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:44,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:49:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:44,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:44,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:49:44,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:44,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:44,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962889955] [2022-01-10 07:49:44,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962889955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:44,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:44,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:44,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242757531] [2022-01-10 07:49:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:44,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:44,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:44,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:44,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:44,242 INFO L87 Difference]: Start difference. First operand 20817 states and 26098 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:49:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:45,433 INFO L93 Difference]: Finished difference Result 54027 states and 65646 transitions. [2022-01-10 07:49:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 150 [2022-01-10 07:49:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:45,493 INFO L225 Difference]: With dead ends: 54027 [2022-01-10 07:49:45,493 INFO L226 Difference]: Without dead ends: 28149 [2022-01-10 07:49:45,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:45,527 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 197 mSDsluCounter, 4185 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8579 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:45,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 8579 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:45,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28149 states. [2022-01-10 07:49:46,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28149 to 28149. [2022-01-10 07:49:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28149 states, 25375 states have (on average 1.2396059113300493) internal successors, (31455), 25729 states have internal predecessors, (31455), 1236 states have call successors, (1236), 992 states have call predecessors, (1236), 1536 states have return successors, (2106), 1428 states have call predecessors, (2106), 1236 states have call successors, (2106) [2022-01-10 07:49:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28149 states to 28149 states and 34797 transitions. [2022-01-10 07:49:46,804 INFO L78 Accepts]: Start accepts. Automaton has 28149 states and 34797 transitions. Word has length 150 [2022-01-10 07:49:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:46,804 INFO L470 AbstractCegarLoop]: Abstraction has 28149 states and 34797 transitions. [2022-01-10 07:49:46,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:49:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 28149 states and 34797 transitions. [2022-01-10 07:49:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-10 07:49:46,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:46,817 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:46,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 07:49:47,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:47,024 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1101915208, now seen corresponding path program 1 times [2022-01-10 07:49:47,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:47,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417292058] [2022-01-10 07:49:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:47,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:47,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:47,026 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:47,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:49:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:47,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:47,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:49:47,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:47,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:47,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417292058] [2022-01-10 07:49:47,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417292058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:47,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:47,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:49:47,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131257103] [2022-01-10 07:49:47,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:47,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:47,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:47,412 INFO L87 Difference]: Start difference. First operand 28149 states and 34797 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:49:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:48,721 INFO L93 Difference]: Finished difference Result 61488 states and 74497 transitions. [2022-01-10 07:49:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 193 [2022-01-10 07:49:48,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:48,782 INFO L225 Difference]: With dead ends: 61488 [2022-01-10 07:49:48,782 INFO L226 Difference]: Without dead ends: 35473 [2022-01-10 07:49:48,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:48,809 INFO L933 BasicCegarLoop]: 4204 mSDtfsCounter, 4067 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:48,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4067 Valid, 4414 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35473 states. [2022-01-10 07:49:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35473 to 35377. [2022-01-10 07:49:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35377 states, 31883 states have (on average 1.2224382899978046) internal successors, (38975), 32277 states have internal predecessors, (38975), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1888 states have return successors, (2622), 1820 states have call predecessors, (2622), 1604 states have call successors, (2622) [2022-01-10 07:49:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35377 states to 35377 states and 43201 transitions. [2022-01-10 07:49:50,301 INFO L78 Accepts]: Start accepts. Automaton has 35377 states and 43201 transitions. Word has length 193 [2022-01-10 07:49:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:50,301 INFO L470 AbstractCegarLoop]: Abstraction has 35377 states and 43201 transitions. [2022-01-10 07:49:50,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:49:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 35377 states and 43201 transitions. [2022-01-10 07:49:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 07:49:50,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:50,320 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:50,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 07:49:50,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:50,528 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:50,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1408212969, now seen corresponding path program 1 times [2022-01-10 07:49:50,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:50,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411793021] [2022-01-10 07:49:50,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:50,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:50,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:50,530 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:50,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:49:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:50,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:50,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-10 07:49:51,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:51,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:51,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411793021] [2022-01-10 07:49:51,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411793021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:51,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:51,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:51,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755003231] [2022-01-10 07:49:51,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:51,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:49:51,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:51,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:49:51,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:49:51,051 INFO L87 Difference]: Start difference. First operand 35377 states and 43201 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 07:49:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:52,662 INFO L93 Difference]: Finished difference Result 68981 states and 83002 transitions. [2022-01-10 07:49:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:52,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 215 [2022-01-10 07:49:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:52,730 INFO L225 Difference]: With dead ends: 68981 [2022-01-10 07:49:52,730 INFO L226 Difference]: Without dead ends: 35739 [2022-01-10 07:49:52,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:52,767 INFO L933 BasicCegarLoop]: 4195 mSDtfsCounter, 4242 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:52,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4248 Valid, 8449 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:49:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35739 states. [2022-01-10 07:49:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35739 to 35739. [2022-01-10 07:49:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35739 states, 32213 states have (on average 1.215378884301369) internal successors, (39151), 32623 states have internal predecessors, (39151), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2400), 1836 states have call predecessors, (2400), 1604 states have call successors, (2400) [2022-01-10 07:49:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35739 states to 35739 states and 43155 transitions. [2022-01-10 07:49:54,649 INFO L78 Accepts]: Start accepts. Automaton has 35739 states and 43155 transitions. Word has length 215 [2022-01-10 07:49:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:54,649 INFO L470 AbstractCegarLoop]: Abstraction has 35739 states and 43155 transitions. [2022-01-10 07:49:54,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 07:49:54,650 INFO L276 IsEmpty]: Start isEmpty. Operand 35739 states and 43155 transitions. [2022-01-10 07:49:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-10 07:49:54,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:54,670 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:54,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:54,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:54,877 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1097036936, now seen corresponding path program 1 times [2022-01-10 07:49:54,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:54,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590122219] [2022-01-10 07:49:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:54,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:54,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:54,896 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:54,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:49:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:55,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:55,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:49:55,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:55,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:55,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590122219] [2022-01-10 07:49:55,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590122219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:55,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:55,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:55,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79194141] [2022-01-10 07:49:55,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:55,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:55,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:55,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:55,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:55,297 INFO L87 Difference]: Start difference. First operand 35739 states and 43155 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:49:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:56,720 INFO L93 Difference]: Finished difference Result 62209 states and 75320 transitions. [2022-01-10 07:49:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:56,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 216 [2022-01-10 07:49:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:56,784 INFO L225 Difference]: With dead ends: 62209 [2022-01-10 07:49:56,784 INFO L226 Difference]: Without dead ends: 35803 [2022-01-10 07:49:56,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:56,952 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 146 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8551 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:56,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 8551 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35803 states. [2022-01-10 07:49:58,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35803 to 35739. [2022-01-10 07:49:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35739 states, 32213 states have (on average 1.1984912923353925) internal successors, (38607), 32623 states have internal predecessors, (38607), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2400), 1836 states have call predecessors, (2400), 1604 states have call successors, (2400) [2022-01-10 07:49:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35739 states to 35739 states and 42611 transitions. [2022-01-10 07:49:58,414 INFO L78 Accepts]: Start accepts. Automaton has 35739 states and 42611 transitions. Word has length 216 [2022-01-10 07:49:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:58,414 INFO L470 AbstractCegarLoop]: Abstraction has 35739 states and 42611 transitions. [2022-01-10 07:49:58,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:49:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 35739 states and 42611 transitions. [2022-01-10 07:49:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-10 07:49:58,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:58,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:58,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:58,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:58,641 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash 181079622, now seen corresponding path program 1 times [2022-01-10 07:49:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:58,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386372946] [2022-01-10 07:49:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:58,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:58,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:58,643 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:58,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:49:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:58,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:58,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:49:58,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:58,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:58,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386372946] [2022-01-10 07:49:58,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386372946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:58,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:58,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:49:58,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481709176] [2022-01-10 07:49:58,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:58,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:58,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:58,960 INFO L87 Difference]: Start difference. First operand 35739 states and 42611 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:50:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:00,385 INFO L93 Difference]: Finished difference Result 62147 states and 72961 transitions. [2022-01-10 07:50:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:00,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 217 [2022-01-10 07:50:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:00,559 INFO L225 Difference]: With dead ends: 62147 [2022-01-10 07:50:00,560 INFO L226 Difference]: Without dead ends: 35741 [2022-01-10 07:50:00,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:00,584 INFO L933 BasicCegarLoop]: 4378 mSDtfsCounter, 181 mSDsluCounter, 4189 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 8567 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:00,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 8567 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35741 states. [2022-01-10 07:50:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35741 to 35739. [2022-01-10 07:50:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35739 states, 32213 states have (on average 1.1969391239561669) internal successors, (38557), 32623 states have internal predecessors, (38557), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2394), 1836 states have call predecessors, (2394), 1604 states have call successors, (2394) [2022-01-10 07:50:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35739 states to 35739 states and 42555 transitions. [2022-01-10 07:50:02,205 INFO L78 Accepts]: Start accepts. Automaton has 35739 states and 42555 transitions. Word has length 217 [2022-01-10 07:50:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:02,206 INFO L470 AbstractCegarLoop]: Abstraction has 35739 states and 42555 transitions. [2022-01-10 07:50:02,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:50:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 35739 states and 42555 transitions. [2022-01-10 07:50:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-10 07:50:02,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:02,223 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:02,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:02,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:02,428 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -40896788, now seen corresponding path program 1 times [2022-01-10 07:50:02,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:02,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005264660] [2022-01-10 07:50:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:02,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:02,430 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:02,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:50:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:02,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:02,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 07:50:02,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:02,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:02,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005264660] [2022-01-10 07:50:02,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005264660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:02,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:02,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:02,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262736492] [2022-01-10 07:50:02,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:02,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:02,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:02,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:02,884 INFO L87 Difference]: Start difference. First operand 35739 states and 42555 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:50:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:04,363 INFO L93 Difference]: Finished difference Result 69056 states and 81945 transitions. [2022-01-10 07:50:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:04,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 218 [2022-01-10 07:50:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:04,434 INFO L225 Difference]: With dead ends: 69056 [2022-01-10 07:50:04,434 INFO L226 Difference]: Without dead ends: 35451 [2022-01-10 07:50:04,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:50:04,477 INFO L933 BasicCegarLoop]: 4189 mSDtfsCounter, 10 mSDsluCounter, 12564 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16753 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:04,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 16753 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35451 states. [2022-01-10 07:50:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35451 to 35307. [2022-01-10 07:50:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35307 states, 32069 states have (on average 1.1816084068726809) internal successors, (37893), 32311 states have internal predecessors, (37893), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1632 states have return successors, (2082), 1716 states have call predecessors, (2082), 1604 states have call successors, (2082) [2022-01-10 07:50:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35307 states to 35307 states and 41579 transitions. [2022-01-10 07:50:06,149 INFO L78 Accepts]: Start accepts. Automaton has 35307 states and 41579 transitions. Word has length 218 [2022-01-10 07:50:06,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:06,149 INFO L470 AbstractCegarLoop]: Abstraction has 35307 states and 41579 transitions. [2022-01-10 07:50:06,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:50:06,149 INFO L276 IsEmpty]: Start isEmpty. Operand 35307 states and 41579 transitions. [2022-01-10 07:50:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-10 07:50:06,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:06,167 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:06,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:50:06,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:06,374 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:06,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1328216330, now seen corresponding path program 1 times [2022-01-10 07:50:06,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:06,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072089488] [2022-01-10 07:50:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:06,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:06,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:06,376 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:06,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:50:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:06,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:06,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 07:50:06,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:06,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:06,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072089488] [2022-01-10 07:50:06,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072089488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:06,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:06,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:50:06,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631670194] [2022-01-10 07:50:06,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:06,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:06,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:06,841 INFO L87 Difference]: Start difference. First operand 35307 states and 41579 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 07:50:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:08,477 INFO L93 Difference]: Finished difference Result 74948 states and 86685 transitions. [2022-01-10 07:50:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:08,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 260 [2022-01-10 07:50:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:08,680 INFO L225 Difference]: With dead ends: 74948 [2022-01-10 07:50:08,680 INFO L226 Difference]: Without dead ends: 41775 [2022-01-10 07:50:08,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:08,717 INFO L933 BasicCegarLoop]: 4202 mSDtfsCounter, 4047 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4047 SdHoareTripleChecker+Valid, 4411 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:08,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4047 Valid, 4411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41775 states. [2022-01-10 07:50:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41775 to 41647. [2022-01-10 07:50:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41647 states, 37769 states have (on average 1.1704042998226059) internal successors, (44205), 38043 states have internal predecessors, (44205), 1940 states have call successors, (1940), 1536 states have call predecessors, (1940), 1936 states have return successors, (2502), 2068 states have call predecessors, (2502), 1940 states have call successors, (2502) [2022-01-10 07:50:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41647 states to 41647 states and 48647 transitions. [2022-01-10 07:50:10,501 INFO L78 Accepts]: Start accepts. Automaton has 41647 states and 48647 transitions. Word has length 260 [2022-01-10 07:50:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:10,501 INFO L470 AbstractCegarLoop]: Abstraction has 41647 states and 48647 transitions. [2022-01-10 07:50:10,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 07:50:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 41647 states and 48647 transitions. [2022-01-10 07:50:10,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-10 07:50:10,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:10,526 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:10,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:10,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:10,730 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:10,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:10,731 INFO L85 PathProgramCache]: Analyzing trace with hash -333038671, now seen corresponding path program 1 times [2022-01-10 07:50:10,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:10,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949758542] [2022-01-10 07:50:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:10,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:10,732 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:10,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:50:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:10,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:10,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-01-10 07:50:11,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:11,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:11,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949758542] [2022-01-10 07:50:11,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949758542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:11,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:11,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:11,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53501687] [2022-01-10 07:50:11,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:11,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:11,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:11,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:11,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:11,110 INFO L87 Difference]: Start difference. First operand 41647 states and 48647 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 07:50:12,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:12,894 INFO L93 Difference]: Finished difference Result 74821 states and 86251 transitions. [2022-01-10 07:50:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:12,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 264 [2022-01-10 07:50:12,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:12,975 INFO L225 Difference]: With dead ends: 74821 [2022-01-10 07:50:12,976 INFO L226 Difference]: Without dead ends: 41649 [2022-01-10 07:50:13,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:13,020 INFO L933 BasicCegarLoop]: 4369 mSDtfsCounter, 177 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 8551 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:13,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 8551 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:13,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41649 states. [2022-01-10 07:50:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41649 to 41647. [2022-01-10 07:50:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41647 states, 37769 states have (on average 1.1685509280097435) internal successors, (44135), 38043 states have internal predecessors, (44135), 1940 states have call successors, (1940), 1536 states have call predecessors, (1940), 1936 states have return successors, (2484), 2068 states have call predecessors, (2484), 1940 states have call successors, (2484) [2022-01-10 07:50:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41647 states to 41647 states and 48559 transitions. [2022-01-10 07:50:15,065 INFO L78 Accepts]: Start accepts. Automaton has 41647 states and 48559 transitions. Word has length 264 [2022-01-10 07:50:15,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:15,067 INFO L470 AbstractCegarLoop]: Abstraction has 41647 states and 48559 transitions. [2022-01-10 07:50:15,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 07:50:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 41647 states and 48559 transitions. [2022-01-10 07:50:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-01-10 07:50:15,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:15,131 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:15,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:15,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:15,340 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:15,340 INFO L85 PathProgramCache]: Analyzing trace with hash 780298266, now seen corresponding path program 1 times [2022-01-10 07:50:15,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:15,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241513] [2022-01-10 07:50:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:15,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:15,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:15,342 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:15,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:50:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:15,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:15,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-01-10 07:50:15,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:15,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:15,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241513] [2022-01-10 07:50:15,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:15,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:15,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:50:15,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539590170] [2022-01-10 07:50:15,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:15,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:15,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:15,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:15,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:15,815 INFO L87 Difference]: Start difference. First operand 41647 states and 48559 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 07:50:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:17,884 INFO L93 Difference]: Finished difference Result 86768 states and 99541 transitions. [2022-01-10 07:50:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 308 [2022-01-10 07:50:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:17,985 INFO L225 Difference]: With dead ends: 86768 [2022-01-10 07:50:17,985 INFO L226 Difference]: Without dead ends: 47255 [2022-01-10 07:50:18,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:18,032 INFO L933 BasicCegarLoop]: 4201 mSDtfsCounter, 4032 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4032 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:18,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4032 Valid, 4410 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47255 states.