/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_label41+token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:38:25,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:38:25,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:38:25,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:38:25,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:38:25,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:38:25,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:38:25,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:38:25,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:38:25,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:38:25,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:38:25,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:38:25,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:38:25,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:38:25,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:38:25,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:38:25,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:38:25,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:38:25,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:38:25,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:38:25,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:38:25,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:38:25,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:38:25,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:38:25,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:38:25,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:38:25,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:38:25,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:38:25,924 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 07:38:25,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:38:25,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:38:25,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:38:25,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:38:25,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:38:25,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:38:25,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:38:25,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:38:25,949 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:38:25,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:38:25,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:38:25,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:38:25,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:38:25,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:38:25,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:38:25,950 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:38:25,950 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:38:25,950 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:38:25,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:38:25,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:38:25,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:38:25,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:38:25,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:38:25,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:38:25,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:38:25,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:38:25,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:38:25,952 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:38:25,952 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:38:25,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:38:25,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:38:25,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:38:25,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:38:25,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:38:26,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:38:26,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:38:26,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:38:26,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:38:26,188 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:38:26,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.01.cil-1.c [2022-01-10 07:38:26,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c5b2074/e11d3d49b3d1432e9176fae686d75baf/FLAG7fa66048c [2022-01-10 07:38:27,074 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:38:27,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.01.cil-1.c [2022-01-10 07:38:27,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c5b2074/e11d3d49b3d1432e9176fae686d75baf/FLAG7fa66048c [2022-01-10 07:38:27,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c5b2074/e11d3d49b3d1432e9176fae686d75baf [2022-01-10 07:38:27,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:38:27,235 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:38:27,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:38:27,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:38:27,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:38:27,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:38:27" (1/1) ... [2022-01-10 07:38:27,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b95f19c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:27, skipping insertion in model container [2022-01-10 07:38:27,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:38:27" (1/1) ... [2022-01-10 07:38:27,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:38:27,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:38:29,120 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_label41+token_ring.01.cil-1.c[376251,376264] [2022-01-10 07:38:29,154 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_label41+token_ring.01.cil-1.c[383339,383352] [2022-01-10 07:38:29,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:38:29,312 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:38:30,089 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_label41+token_ring.01.cil-1.c[376251,376264] [2022-01-10 07:38:30,097 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_label41+token_ring.01.cil-1.c[383339,383352] [2022-01-10 07:38:30,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:38:30,168 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:38:30,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30 WrapperNode [2022-01-10 07:38:30,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:38:30,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:38:30,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:38:30,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:38:30,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:30,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:30,608 INFO L137 Inliner]: procedures = 47, calls = 44, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 12541 [2022-01-10 07:38:30,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:38:30,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:38:30,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:38:30,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:38:30,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:30,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:30,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:30,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:30,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:30,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:30,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:31,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:38:31,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:38:31,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:38:31,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:38:31,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (1/1) ... [2022-01-10 07:38:31,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:38:31,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:38:31,141 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 07:38:31,149 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 07:38:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:38:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:38:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:38:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:38:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:38:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:38:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:38:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:38:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:38:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:38:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:38:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:38:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:38:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:38:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:38:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:38:31,286 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:38:31,287 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:38:39,411 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:38:39,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:38:39,444 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 07:38:39,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:38:39 BoogieIcfgContainer [2022-01-10 07:38:39,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:38:39,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:38:39,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:38:39,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:38:39,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:38:27" (1/3) ... [2022-01-10 07:38:39,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45152bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:38:39, skipping insertion in model container [2022-01-10 07:38:39,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:30" (2/3) ... [2022-01-10 07:38:39,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45152bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:38:39, skipping insertion in model container [2022-01-10 07:38:39,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:38:39" (3/3) ... [2022-01-10 07:38:39,461 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.01.cil-1.c [2022-01-10 07:38:39,467 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:38:39,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:38:39,547 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:38:39,555 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 07:38:39,556 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:38:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 2290 states, 2266 states have (on average 1.8587819947043247) internal successors, (4212), 2269 states have internal predecessors, (4212), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-10 07:38:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:38:39,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:39,617 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] [2022-01-10 07:38:39,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:39,623 INFO L85 PathProgramCache]: Analyzing trace with hash -36301034, now seen corresponding path program 1 times [2022-01-10 07:38:39,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:39,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146696707] [2022-01-10 07:38:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:39,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:39,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:39,639 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 07:38:39,650 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 07:38:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:39,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:40,006 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 07:38:40,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:40,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:40,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146696707] [2022-01-10 07:38:40,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146696707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:40,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:40,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:40,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265726888] [2022-01-10 07:38:40,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:40,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:40,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:40,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:40,045 INFO L87 Difference]: Start difference. First operand has 2290 states, 2266 states have (on average 1.8587819947043247) internal successors, (4212), 2269 states have internal predecessors, (4212), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 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 07:38:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:40,466 INFO L93 Difference]: Finished difference Result 4671 states and 8623 transitions. [2022-01-10 07:38:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 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 57 [2022-01-10 07:38:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:40,527 INFO L225 Difference]: With dead ends: 4671 [2022-01-10 07:38:40,528 INFO L226 Difference]: Without dead ends: 2320 [2022-01-10 07:38:40,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 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 07:38:40,555 INFO L933 BasicCegarLoop]: 4178 mSDtfsCounter, 4238 mSDsluCounter, 8320 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 12498 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:40,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4247 Valid, 12498 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:38:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-01-10 07:38:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2313. [2022-01-10 07:38:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2273 states have (on average 1.8376594808622966) internal successors, (4177), 2276 states have internal predecessors, (4177), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-01-10 07:38:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 4228 transitions. [2022-01-10 07:38:40,806 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 4228 transitions. Word has length 57 [2022-01-10 07:38:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:40,807 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 4228 transitions. [2022-01-10 07:38:40,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 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 07:38:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 4228 transitions. [2022-01-10 07:38:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:38:40,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:40,810 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] [2022-01-10 07:38:40,824 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 07:38:41,023 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 07:38:41,024 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:41,026 INFO L85 PathProgramCache]: Analyzing trace with hash -948253030, now seen corresponding path program 1 times [2022-01-10 07:38:41,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:41,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050699319] [2022-01-10 07:38:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:41,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:41,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:41,029 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 07:38:41,031 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 07:38:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:41,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:41,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:41,250 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 07:38:41,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:41,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:41,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050699319] [2022-01-10 07:38:41,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050699319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:41,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:41,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:41,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241106288] [2022-01-10 07:38:41,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:41,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:41,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:41,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:41,261 INFO L87 Difference]: Start difference. First operand 2313 states and 4228 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 07:38:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:41,486 INFO L93 Difference]: Finished difference Result 2496 states and 4492 transitions. [2022-01-10 07:38:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:41,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 57 [2022-01-10 07:38:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:41,508 INFO L225 Difference]: With dead ends: 2496 [2022-01-10 07:38:41,508 INFO L226 Difference]: Without dead ends: 2313 [2022-01-10 07:38:41,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 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 07:38:41,513 INFO L933 BasicCegarLoop]: 4081 mSDtfsCounter, 4118 mSDsluCounter, 8057 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4127 SdHoareTripleChecker+Valid, 12138 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:41,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4127 Valid, 12138 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:38:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2022-01-10 07:38:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2313. [2022-01-10 07:38:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2273 states have (on average 1.8345798504179498) internal successors, (4170), 2276 states have internal predecessors, (4170), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-01-10 07:38:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 4221 transitions. [2022-01-10 07:38:41,587 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 4221 transitions. Word has length 57 [2022-01-10 07:38:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:41,588 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 4221 transitions. [2022-01-10 07:38:41,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 07:38:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 4221 transitions. [2022-01-10 07:38:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:38:41,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:41,596 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] [2022-01-10 07:38:41,606 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 07:38:41,802 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 07:38:41,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1516181142, now seen corresponding path program 1 times [2022-01-10 07:38:41,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:41,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782060063] [2022-01-10 07:38:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:41,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:41,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:41,806 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 07:38:41,808 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 07:38:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:41,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:41,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:41,986 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 07:38:41,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:41,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:41,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782060063] [2022-01-10 07:38:41,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782060063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:41,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:41,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:41,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550546792] [2022-01-10 07:38:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:41,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:41,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:41,989 INFO L87 Difference]: Start difference. First operand 2313 states and 4221 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 07:38:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:42,228 INFO L93 Difference]: Finished difference Result 2534 states and 4534 transitions. [2022-01-10 07:38:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:42,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 57 [2022-01-10 07:38:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:42,240 INFO L225 Difference]: With dead ends: 2534 [2022-01-10 07:38:42,240 INFO L226 Difference]: Without dead ends: 2351 [2022-01-10 07:38:42,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 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 07:38:42,243 INFO L933 BasicCegarLoop]: 4078 mSDtfsCounter, 4128 mSDsluCounter, 8052 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4137 SdHoareTripleChecker+Valid, 12130 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:42,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4137 Valid, 12130 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:38:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2022-01-10 07:38:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2351. [2022-01-10 07:38:42,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2305 states have (on average 1.824295010845987) internal successors, (4205), 2308 states have internal predecessors, (4205), 27 states have call successors, (27), 16 states have call predecessors, (27), 17 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-01-10 07:38:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 4260 transitions. [2022-01-10 07:38:42,319 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 4260 transitions. Word has length 57 [2022-01-10 07:38:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:42,319 INFO L470 AbstractCegarLoop]: Abstraction has 2351 states and 4260 transitions. [2022-01-10 07:38:42,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 07:38:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 4260 transitions. [2022-01-10 07:38:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:38:42,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:42,322 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] [2022-01-10 07:38:42,332 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 07:38:42,531 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 07:38:42,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2128217637, now seen corresponding path program 1 times [2022-01-10 07:38:42,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:42,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388945215] [2022-01-10 07:38:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:42,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:42,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:42,535 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 07:38:42,535 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 07:38:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:42,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:42,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:42,730 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 07:38:42,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:42,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:42,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388945215] [2022-01-10 07:38:42,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388945215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:42,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:42,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:42,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171839159] [2022-01-10 07:38:42,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:42,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:42,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:42,738 INFO L87 Difference]: Start difference. First operand 2351 states and 4260 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 07:38:42,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:42,998 INFO L93 Difference]: Finished difference Result 2604 states and 4604 transitions. [2022-01-10 07:38:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:42,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 57 [2022-01-10 07:38:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:43,011 INFO L225 Difference]: With dead ends: 2604 [2022-01-10 07:38:43,011 INFO L226 Difference]: Without dead ends: 2383 [2022-01-10 07:38:43,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 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 07:38:43,018 INFO L933 BasicCegarLoop]: 4076 mSDtfsCounter, 4121 mSDsluCounter, 8048 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 12124 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:43,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4130 Valid, 12124 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:38:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2022-01-10 07:38:43,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2383. [2022-01-10 07:38:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 2335 states have (on average 1.8132762312633832) internal successors, (4234), 2338 states have internal predecessors, (4234), 27 states have call successors, (27), 18 states have call predecessors, (27), 19 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-01-10 07:38:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 4289 transitions. [2022-01-10 07:38:43,097 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 4289 transitions. Word has length 57 [2022-01-10 07:38:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:43,098 INFO L470 AbstractCegarLoop]: Abstraction has 2383 states and 4289 transitions. [2022-01-10 07:38:43,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 07:38:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 4289 transitions. [2022-01-10 07:38:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:38:43,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:43,101 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] [2022-01-10 07:38:43,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:43,309 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 07:38:43,310 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1597247703, now seen corresponding path program 1 times [2022-01-10 07:38:43,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:43,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260689816] [2022-01-10 07:38:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:43,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:43,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:43,313 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 07:38:43,315 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 07:38:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:43,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:43,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:43,480 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 07:38:43,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:43,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:43,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260689816] [2022-01-10 07:38:43,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260689816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:43,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:43,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:43,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653008634] [2022-01-10 07:38:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:43,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:43,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:43,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:43,483 INFO L87 Difference]: Start difference. First operand 2383 states and 4289 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 07:38:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:43,578 INFO L93 Difference]: Finished difference Result 2677 states and 4669 transitions. [2022-01-10 07:38:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:43,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-01-10 07:38:43,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:43,592 INFO L225 Difference]: With dead ends: 2677 [2022-01-10 07:38:43,592 INFO L226 Difference]: Without dead ends: 2425 [2022-01-10 07:38:43,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 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 07:38:43,595 INFO L933 BasicCegarLoop]: 4090 mSDtfsCounter, 49 mSDsluCounter, 12284 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16374 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 07:38:43,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 16374 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-01-10 07:38:43,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2389. [2022-01-10 07:38:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 2341 states have (on average 1.8094831268688594) internal successors, (4236), 2344 states have internal predecessors, (4236), 27 states have call successors, (27), 18 states have call predecessors, (27), 19 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-01-10 07:38:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 4291 transitions. [2022-01-10 07:38:43,667 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 4291 transitions. Word has length 57 [2022-01-10 07:38:43,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:43,667 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 4291 transitions. [2022-01-10 07:38:43,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 07:38:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 4291 transitions. [2022-01-10 07:38:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:38:43,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:43,670 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] [2022-01-10 07:38:43,680 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 07:38:43,878 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 07:38:43,879 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:43,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1524861145, now seen corresponding path program 1 times [2022-01-10 07:38:43,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:43,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553051253] [2022-01-10 07:38:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:43,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:43,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:43,881 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 07:38:43,882 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 07:38:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:43,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:43,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:44,054 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 07:38:44,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:44,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:44,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553051253] [2022-01-10 07:38:44,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553051253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:44,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:44,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:38:44,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504731801] [2022-01-10 07:38:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:44,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:38:44,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:38:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:38:44,056 INFO L87 Difference]: Start difference. First operand 2389 states and 4291 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 07:38:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:44,144 INFO L93 Difference]: Finished difference Result 2661 states and 4637 transitions. [2022-01-10 07:38:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:38:44,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-01-10 07:38:44,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:44,156 INFO L225 Difference]: With dead ends: 2661 [2022-01-10 07:38:44,156 INFO L226 Difference]: Without dead ends: 2403 [2022-01-10 07:38:44,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 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 07:38:44,158 INFO L933 BasicCegarLoop]: 4090 mSDtfsCounter, 10 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16359 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 07:38:44,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 16359 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:44,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2022-01-10 07:38:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2395. [2022-01-10 07:38:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2347 states have (on average 1.8057094162760972) internal successors, (4238), 2350 states have internal predecessors, (4238), 27 states have call successors, (27), 18 states have call predecessors, (27), 19 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-01-10 07:38:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 4293 transitions. [2022-01-10 07:38:44,215 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 4293 transitions. Word has length 57 [2022-01-10 07:38:44,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:44,215 INFO L470 AbstractCegarLoop]: Abstraction has 2395 states and 4293 transitions. [2022-01-10 07:38:44,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 07:38:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 4293 transitions. [2022-01-10 07:38:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:38:44,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:44,217 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] [2022-01-10 07:38:44,226 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 07:38:44,425 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 07:38:44,425 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash -846878117, now seen corresponding path program 1 times [2022-01-10 07:38:44,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:44,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473537009] [2022-01-10 07:38:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:44,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:44,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:44,427 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 07:38:44,428 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 07:38:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:44,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:44,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:44,586 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 07:38:44,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:44,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:44,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473537009] [2022-01-10 07:38:44,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473537009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:44,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:44,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:38:44,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654120967] [2022-01-10 07:38:44,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:44,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:44,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:44,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:44,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:44,588 INFO L87 Difference]: Start difference. First operand 2395 states and 4293 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 07:38:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:44,643 INFO L93 Difference]: Finished difference Result 2902 states and 4916 transitions. [2022-01-10 07:38:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 57 [2022-01-10 07:38:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:44,654 INFO L225 Difference]: With dead ends: 2902 [2022-01-10 07:38:44,654 INFO L226 Difference]: Without dead ends: 2638 [2022-01-10 07:38:44,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 07:38:44,657 INFO L933 BasicCegarLoop]: 4129 mSDtfsCounter, 4028 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4028 SdHoareTripleChecker+Valid, 4240 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 07:38:44,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4028 Valid, 4240 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-01-10 07:38:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2636. [2022-01-10 07:38:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2546 states have (on average 1.7564807541241163) internal successors, (4472), 2552 states have internal predecessors, (4472), 50 states have call successors, (50), 36 states have call predecessors, (50), 38 states have return successors, (52), 48 states have call predecessors, (52), 50 states have call successors, (52) [2022-01-10 07:38:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 4574 transitions. [2022-01-10 07:38:44,722 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 4574 transitions. Word has length 57 [2022-01-10 07:38:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:44,722 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 4574 transitions. [2022-01-10 07:38:44,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 07:38:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 4574 transitions. [2022-01-10 07:38:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 07:38:44,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:44,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:44,735 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 07:38:44,935 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 07:38:44,936 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash -380331225, now seen corresponding path program 1 times [2022-01-10 07:38:44,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:44,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589125107] [2022-01-10 07:38:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:44,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:44,938 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 07:38:44,940 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 07:38:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:45,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:38:45,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 07:38:45,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:45,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:45,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589125107] [2022-01-10 07:38:45,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589125107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:45,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:45,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:45,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022748678] [2022-01-10 07:38:45,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:45,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:38:45,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:45,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:38:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:38:45,192 INFO L87 Difference]: Start difference. First operand 2636 states and 4574 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 07:38:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:45,381 INFO L93 Difference]: Finished difference Result 3548 states and 5681 transitions. [2022-01-10 07:38:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:45,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 92 [2022-01-10 07:38:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:45,395 INFO L225 Difference]: With dead ends: 3548 [2022-01-10 07:38:45,395 INFO L226 Difference]: Without dead ends: 3044 [2022-01-10 07:38:45,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 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 07:38:45,398 INFO L933 BasicCegarLoop]: 4126 mSDtfsCounter, 4081 mSDsluCounter, 4125 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 8251 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:45,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4087 Valid, 8251 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:38:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2022-01-10 07:38:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3042. [2022-01-10 07:38:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2873 states have (on average 1.6898712147580925) internal successors, (4855), 2888 states have internal predecessors, (4855), 91 states have call successors, (91), 64 states have call predecessors, (91), 76 states have return successors, (115), 91 states have call predecessors, (115), 91 states have call successors, (115) [2022-01-10 07:38:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5061 transitions. [2022-01-10 07:38:45,495 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5061 transitions. Word has length 92 [2022-01-10 07:38:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:45,497 INFO L470 AbstractCegarLoop]: Abstraction has 3042 states and 5061 transitions. [2022-01-10 07:38:45,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 07:38:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5061 transitions. [2022-01-10 07:38:45,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 07:38:45,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:45,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:45,513 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 07:38:45,710 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 07:38:45,711 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:45,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash 944524969, now seen corresponding path program 1 times [2022-01-10 07:38:45,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:45,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941972724] [2022-01-10 07:38:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:45,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:45,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:45,713 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 07:38:45,747 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 07:38:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:45,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:45,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:38:45,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:45,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941972724] [2022-01-10 07:38:45,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941972724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:45,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:45,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:45,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760007682] [2022-01-10 07:38:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:45,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:45,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:45,909 INFO L87 Difference]: Start difference. First operand 3042 states and 5061 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 07:38:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:46,045 INFO L93 Difference]: Finished difference Result 3948 states and 6140 transitions. [2022-01-10 07:38:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:46,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 92 [2022-01-10 07:38:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:46,073 INFO L225 Difference]: With dead ends: 3948 [2022-01-10 07:38:46,073 INFO L226 Difference]: Without dead ends: 3038 [2022-01-10 07:38:46,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 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 07:38:46,078 INFO L933 BasicCegarLoop]: 4091 mSDtfsCounter, 126 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 8049 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 07:38:46,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 8049 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2022-01-10 07:38:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 3038. [2022-01-10 07:38:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 2872 states have (on average 1.6897632311977715) internal successors, (4853), 2886 states have internal predecessors, (4853), 88 states have call successors, (88), 64 states have call predecessors, (88), 76 states have return successors, (112), 88 states have call predecessors, (112), 88 states have call successors, (112) [2022-01-10 07:38:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 5053 transitions. [2022-01-10 07:38:46,161 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 5053 transitions. Word has length 92 [2022-01-10 07:38:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:46,161 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 5053 transitions. [2022-01-10 07:38:46,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 07:38:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 5053 transitions. [2022-01-10 07:38:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 07:38:46,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:46,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:46,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:38:46,373 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 07:38:46,373 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:46,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1721637746, now seen corresponding path program 1 times [2022-01-10 07:38:46,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:46,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634397200] [2022-01-10 07:38:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:46,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:46,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:46,375 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 07:38:46,376 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 07:38:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:46,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:46,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 07:38:46,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:46,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:46,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634397200] [2022-01-10 07:38:46,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634397200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:46,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:46,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:46,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480328697] [2022-01-10 07:38:46,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:46,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:46,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:46,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:46,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:46,570 INFO L87 Difference]: Start difference. First operand 3038 states and 5053 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 07:38:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:46,656 INFO L93 Difference]: Finished difference Result 4609 states and 6954 transitions. [2022-01-10 07:38:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 93 [2022-01-10 07:38:46,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:46,666 INFO L225 Difference]: With dead ends: 4609 [2022-01-10 07:38:46,666 INFO L226 Difference]: Without dead ends: 3374 [2022-01-10 07:38:46,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 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 07:38:46,671 INFO L933 BasicCegarLoop]: 4191 mSDtfsCounter, 96 mSDsluCounter, 4083 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 8274 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 07:38:46,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 8274 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:46,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2022-01-10 07:38:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3374. [2022-01-10 07:38:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3148 states have (on average 1.6429479034307497) internal successors, (5172), 3164 states have internal predecessors, (5172), 122 states have call successors, (122), 88 states have call predecessors, (122), 102 states have return successors, (158), 122 states have call predecessors, (158), 122 states have call successors, (158) [2022-01-10 07:38:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 5452 transitions. [2022-01-10 07:38:46,767 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 5452 transitions. Word has length 93 [2022-01-10 07:38:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:46,768 INFO L470 AbstractCegarLoop]: Abstraction has 3374 states and 5452 transitions. [2022-01-10 07:38:46,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 07:38:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 5452 transitions. [2022-01-10 07:38:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 07:38:46,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:46,770 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 07:38:46,782 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 07:38:46,979 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 07:38:46,980 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash -330808911, now seen corresponding path program 1 times [2022-01-10 07:38:46,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:46,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293395580] [2022-01-10 07:38:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:46,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:46,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:46,982 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 07:38:46,985 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 07:38:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:47,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:47,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 07:38:47,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:47,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:47,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293395580] [2022-01-10 07:38:47,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293395580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:47,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:47,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:38:47,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066457060] [2022-01-10 07:38:47,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:47,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:47,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:47,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:47,272 INFO L87 Difference]: Start difference. First operand 3374 states and 5452 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 07:38:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:47,353 INFO L93 Difference]: Finished difference Result 4953 states and 7330 transitions. [2022-01-10 07:38:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 118 [2022-01-10 07:38:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:47,363 INFO L225 Difference]: With dead ends: 4953 [2022-01-10 07:38:47,363 INFO L226 Difference]: Without dead ends: 3710 [2022-01-10 07:38:47,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 07:38:47,367 INFO L933 BasicCegarLoop]: 4128 mSDtfsCounter, 4003 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4003 SdHoareTripleChecker+Valid, 4239 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 07:38:47,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4003 Valid, 4239 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-01-10 07:38:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3698. [2022-01-10 07:38:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3412 states have (on average 1.6019929660023446) internal successors, (5466), 3430 states have internal predecessors, (5466), 156 states have call successors, (156), 112 states have call predecessors, (156), 128 states have return successors, (194), 156 states have call predecessors, (194), 156 states have call successors, (194) [2022-01-10 07:38:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5816 transitions. [2022-01-10 07:38:47,468 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5816 transitions. Word has length 118 [2022-01-10 07:38:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:47,468 INFO L470 AbstractCegarLoop]: Abstraction has 3698 states and 5816 transitions. [2022-01-10 07:38:47,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 07:38:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5816 transitions. [2022-01-10 07:38:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 07:38:47,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:47,472 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:47,484 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 07:38:47,681 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 07:38:47,681 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:47,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:47,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1993783031, now seen corresponding path program 1 times [2022-01-10 07:38:47,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:47,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127473287] [2022-01-10 07:38:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:47,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:47,683 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 07:38:47,684 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 07:38:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:47,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:38:47,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 07:38:47,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:47,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:47,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127473287] [2022-01-10 07:38:47,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127473287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:47,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:47,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:38:47,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190052264] [2022-01-10 07:38:47,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:47,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:38:47,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:38:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:38:47,982 INFO L87 Difference]: Start difference. First operand 3698 states and 5816 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 07:38:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:48,196 INFO L93 Difference]: Finished difference Result 5276 states and 7695 transitions. [2022-01-10 07:38:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:38:48,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 134 [2022-01-10 07:38:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:48,207 INFO L225 Difference]: With dead ends: 5276 [2022-01-10 07:38:48,207 INFO L226 Difference]: Without dead ends: 3710 [2022-01-10 07:38:48,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 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 07:38:48,213 INFO L933 BasicCegarLoop]: 4093 mSDtfsCounter, 4085 mSDsluCounter, 4103 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4091 SdHoareTripleChecker+Valid, 8196 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:48,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4091 Valid, 8196 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:38:48,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-01-10 07:38:48,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3710. [2022-01-10 07:38:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3420 states have (on average 1.5941520467836257) internal successors, (5452), 3440 states have internal predecessors, (5452), 156 states have call successors, (156), 112 states have call predecessors, (156), 132 states have return successors, (182), 158 states have call predecessors, (182), 156 states have call successors, (182) [2022-01-10 07:38:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 5790 transitions. [2022-01-10 07:38:48,313 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 5790 transitions. Word has length 134 [2022-01-10 07:38:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:48,314 INFO L470 AbstractCegarLoop]: Abstraction has 3710 states and 5790 transitions. [2022-01-10 07:38:48,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 07:38:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 5790 transitions. [2022-01-10 07:38:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 07:38:48,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:48,319 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, 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] [2022-01-10 07:38:48,334 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 07:38:48,534 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 07:38:48,534 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1434078546, now seen corresponding path program 1 times [2022-01-10 07:38:48,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:48,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86503636] [2022-01-10 07:38:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:48,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:48,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:48,537 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 07:38:48,538 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 07:38:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:48,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:48,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 07:38:48,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:48,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:48,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86503636] [2022-01-10 07:38:48,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86503636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:48,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:48,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:48,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543919661] [2022-01-10 07:38:48,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:48,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:48,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:48,809 INFO L87 Difference]: Start difference. First operand 3710 states and 5790 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 07:38:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:48,889 INFO L93 Difference]: Finished difference Result 4974 states and 7307 transitions. [2022-01-10 07:38:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 135 [2022-01-10 07:38:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:48,898 INFO L225 Difference]: With dead ends: 4974 [2022-01-10 07:38:48,898 INFO L226 Difference]: Without dead ends: 3718 [2022-01-10 07:38:48,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 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 07:38:48,903 INFO L933 BasicCegarLoop]: 4152 mSDtfsCounter, 90 mSDsluCounter, 4065 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 8217 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 07:38:48,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 8217 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2022-01-10 07:38:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3710. [2022-01-10 07:38:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3420 states have (on average 1.5824561403508772) internal successors, (5412), 3440 states have internal predecessors, (5412), 156 states have call successors, (156), 112 states have call predecessors, (156), 132 states have return successors, (182), 158 states have call predecessors, (182), 156 states have call successors, (182) [2022-01-10 07:38:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 5750 transitions. [2022-01-10 07:38:49,044 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 5750 transitions. Word has length 135 [2022-01-10 07:38:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:49,044 INFO L470 AbstractCegarLoop]: Abstraction has 3710 states and 5750 transitions. [2022-01-10 07:38:49,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 07:38:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 5750 transitions. [2022-01-10 07:38:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 07:38:49,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:49,047 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:49,057 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 07:38:49,257 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 07:38:49,258 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash -26178757, now seen corresponding path program 1 times [2022-01-10 07:38:49,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:49,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991033008] [2022-01-10 07:38:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:49,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:49,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:49,260 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 07:38:49,262 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 07:38:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:49,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:38:49,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 07:38:49,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:38:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-10 07:38:49,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:49,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991033008] [2022-01-10 07:38:49,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991033008] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 07:38:49,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 07:38:49,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-01-10 07:38:49,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734457431] [2022-01-10 07:38:49,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:49,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:38:49,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:38:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:38:49,828 INFO L87 Difference]: Start difference. First operand 3710 states and 5750 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 07:38:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:50,029 INFO L93 Difference]: Finished difference Result 5300 states and 7557 transitions. [2022-01-10 07:38:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:38:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 136 [2022-01-10 07:38:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:50,043 INFO L225 Difference]: With dead ends: 5300 [2022-01-10 07:38:50,043 INFO L226 Difference]: Without dead ends: 5298 [2022-01-10 07:38:50,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:38:50,046 INFO L933 BasicCegarLoop]: 4195 mSDtfsCounter, 4161 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 8356 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:38:50,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4161 Valid, 8356 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:38:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2022-01-10 07:38:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 4362. [2022-01-10 07:38:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 3956 states have (on average 1.5217391304347827) internal successors, (6020), 3982 states have internal predecessors, (6020), 220 states have call successors, (220), 156 states have call predecessors, (220), 184 states have return successors, (260), 224 states have call predecessors, (260), 220 states have call successors, (260) [2022-01-10 07:38:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 6500 transitions. [2022-01-10 07:38:50,182 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 6500 transitions. Word has length 136 [2022-01-10 07:38:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:50,183 INFO L470 AbstractCegarLoop]: Abstraction has 4362 states and 6500 transitions. [2022-01-10 07:38:50,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 07:38:50,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 6500 transitions. [2022-01-10 07:38:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 07:38:50,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:50,188 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2022-01-10 07:38:50,200 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 07:38:50,398 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 07:38:50,398 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash -970573154, now seen corresponding path program 2 times [2022-01-10 07:38:50,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:50,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336261902] [2022-01-10 07:38:50,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:38:50,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:50,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:50,400 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 07:38:50,402 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 07:38:50,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 07:38:50,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:38:50,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:38:50,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:38:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-10 07:38:50,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:38:50,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:38:50,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336261902] [2022-01-10 07:38:50,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336261902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:38:50,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:38:50,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:38:50,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185948855] [2022-01-10 07:38:50,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:38:50,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:38:50,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:38:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:38:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:38:50,693 INFO L87 Difference]: Start difference. First operand 4362 states and 6500 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:38:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:38:50,764 INFO L93 Difference]: Finished difference Result 5273 states and 7539 transitions. [2022-01-10 07:38:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:38:50,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 175 [2022-01-10 07:38:50,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:38:50,770 INFO L225 Difference]: With dead ends: 5273 [2022-01-10 07:38:50,770 INFO L226 Difference]: Without dead ends: 2123 [2022-01-10 07:38:50,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 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 07:38:50,777 INFO L933 BasicCegarLoop]: 4149 mSDtfsCounter, 86 mSDsluCounter, 4075 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 8224 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 07:38:50,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 8224 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:38:50,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-01-10 07:38:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2022-01-10 07:38:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:38:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2022-01-10 07:38:50,808 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 175 [2022-01-10 07:38:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:38:50,808 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2022-01-10 07:38:50,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:38:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2022-01-10 07:38:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1647 [2022-01-10 07:38:50,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:38:50,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:50,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 07:38:51,080 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 07:38:51,080 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:38:51,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:38:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash -889868883, now seen corresponding path program 1 times [2022-01-10 07:38:51,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:38:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123960214] [2022-01-10 07:38:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:38:51,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:38:51,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:38:51,096 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 07:38:51,096 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 07:38:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:38:51,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 07:38:51,602 INFO L286 TraceCheckSpWp]: Computing forward predicates...