/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_label48+token_ring.11.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:50:37,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:50:37,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:50:38,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:50:38,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:50:38,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:50:38,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:50:38,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:50:38,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:50:38,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:50:38,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:50:38,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:50:38,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:50:38,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:50:38,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:50:38,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:50:38,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:50:38,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:50:38,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:50:38,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:50:38,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:50:38,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:50:38,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:50:38,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:50:38,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:50:38,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:50:38,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:50:38,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:50:38,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:50:38,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:50:38,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:50:38,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:50:38,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:50:38,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:50:38,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:50:38,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:50:38,041 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 07:50:38,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:50:38,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:50:38,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:50:38,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:50:38,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:50:38,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:50:38,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:50:38,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:50:38,065 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:50:38,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:50:38,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:50:38,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:50:38,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:50:38,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:50:38,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:50:38,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:50:38,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:50:38,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:50:38,067 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:50:38,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:50:38,067 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:50:38,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:50:38,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:50:38,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:50:38,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:50:38,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:50:38,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:50:38,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:50:38,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:50:38,285 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:50:38,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.11.cil-2.c [2022-01-10 07:50:38,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10eeac09d/a1dc9773cb17418eb9dad18c3129872c/FLAG59192c6d9 [2022-01-10 07:50:39,144 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:50:39,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.11.cil-2.c [2022-01-10 07:50:39,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10eeac09d/a1dc9773cb17418eb9dad18c3129872c/FLAG59192c6d9 [2022-01-10 07:50:39,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10eeac09d/a1dc9773cb17418eb9dad18c3129872c [2022-01-10 07:50:39,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:50:39,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:50:39,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:50:39,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:50:39,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:50:39,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:50:39" (1/1) ... [2022-01-10 07:50:39,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe20ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:39, skipping insertion in model container [2022-01-10 07:50:39,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:50:39" (1/1) ... [2022-01-10 07:50:39,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:50:39,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:50:41,073 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_label48+token_ring.11.cil-2.c[375709,375722] [2022-01-10 07:50:41,095 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_label48+token_ring.11.cil-2.c[383339,383352] [2022-01-10 07:50:41,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:50:41,286 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:50:41,843 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_label48+token_ring.11.cil-2.c[375709,375722] [2022-01-10 07:50:41,850 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_label48+token_ring.11.cil-2.c[383339,383352] [2022-01-10 07:50:41,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:50:41,946 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:50:41,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41 WrapperNode [2022-01-10 07:50:41,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:50:41,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:50:41,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:50:41,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:50:41,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,214 INFO L137 Inliner]: procedures = 67, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13101 [2022-01-10 07:50:42,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:50:42,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:50:42,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:50:42,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:50:42,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:50:42,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:50:42,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:50:42,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:50:42,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (1/1) ... [2022-01-10 07:50:42,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:50:42,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:50:42,627 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 07:50:42,643 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 07:50:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:50:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:50:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:50:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:50:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:50:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:50:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:50:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:50:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:50:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:50:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:50:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:50:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:50:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:50:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:50:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:50:42,847 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:50:42,848 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:50:50,381 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:50:50,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:50:50,406 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 07:50:50,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:50 BoogieIcfgContainer [2022-01-10 07:50:50,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:50:50,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:50:50,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:50:50,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:50:50,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:50:39" (1/3) ... [2022-01-10 07:50:50,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666c0a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:50:50, skipping insertion in model container [2022-01-10 07:50:50,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:41" (2/3) ... [2022-01-10 07:50:50,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666c0a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:50:50, skipping insertion in model container [2022-01-10 07:50:50,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:50" (3/3) ... [2022-01-10 07:50:50,417 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.11.cil-2.c [2022-01-10 07:50:50,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:50:50,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:50:50,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:50:50,471 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 07:50:50,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:50:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 07:50:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:50,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:50,541 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] [2022-01-10 07:50:50,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-01-10 07:50:50,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:50,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671943951] [2022-01-10 07:50:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:50,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:50,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:50,557 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 07:50:50,572 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 07:50:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:50,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:50,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:51,221 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 07:50:51,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:51,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:51,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671943951] [2022-01-10 07:50:51,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671943951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:51,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:51,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:51,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26515687] [2022-01-10 07:50:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:51,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:51,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:51,263 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 07:50:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:51,585 INFO L93 Difference]: Finished difference Result 5068 states and 9321 transitions. [2022-01-10 07:50:51,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:51,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-01-10 07:50:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:51,639 INFO L225 Difference]: With dead ends: 5068 [2022-01-10 07:50:51,639 INFO L226 Difference]: Without dead ends: 2473 [2022-01-10 07:50:51,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:51,652 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 544 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 8601 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 07:50:51,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 8601 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:51,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-01-10 07:50:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2022-01-10 07:50:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 07:50:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-01-10 07:50:51,741 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-01-10 07:50:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:51,742 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-01-10 07:50:51,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 07:50:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-01-10 07:50:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:51,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:51,744 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] [2022-01-10 07:50:51,755 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 07:50:51,952 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 07:50:51,953 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-01-10 07:50:51,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:51,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725872110] [2022-01-10 07:50:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:51,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:51,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:51,956 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 07:50:51,957 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 07:50:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:52,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:52,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:52,462 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 07:50:52,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:52,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725872110] [2022-01-10 07:50:52,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725872110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:52,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:52,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:52,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413424934] [2022-01-10 07:50:52,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:52,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:52,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:52,465 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 07:50:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:53,074 INFO L93 Difference]: Finished difference Result 3183 states and 5643 transitions. [2022-01-10 07:50:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:53,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-01-10 07:50:53,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:53,092 INFO L225 Difference]: With dead ends: 3183 [2022-01-10 07:50:53,092 INFO L226 Difference]: Without dead ends: 2850 [2022-01-10 07:50:53,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:50:53,096 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 5020 mSDsluCounter, 9013 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5039 SdHoareTripleChecker+Valid, 13570 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:53,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5039 Valid, 13570 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:50:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2022-01-10 07:50:53,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2823. [2022-01-10 07:50:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:50:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5067 transitions. [2022-01-10 07:50:53,168 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5067 transitions. Word has length 167 [2022-01-10 07:50:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:53,169 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5067 transitions. [2022-01-10 07:50:53,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 07:50:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5067 transitions. [2022-01-10 07:50:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:53,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:53,175 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] [2022-01-10 07:50:53,199 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 07:50:53,383 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 07:50:53,384 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-01-10 07:50:53,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:53,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928559114] [2022-01-10 07:50:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:53,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:53,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:53,397 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 07:50:53,399 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 07:50:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:53,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:53,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:53,791 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 07:50:53,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:53,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:53,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928559114] [2022-01-10 07:50:53,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928559114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:53,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:53,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:53,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42224392] [2022-01-10 07:50:53,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:53,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:53,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:53,794 INFO L87 Difference]: Start difference. First operand 2823 states and 5067 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:54,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:54,210 INFO L93 Difference]: Finished difference Result 3506 states and 6151 transitions. [2022-01-10 07:50:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:50:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:54,223 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:50:54,224 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:50:54,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:50:54,228 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 4707 mSDsluCounter, 8515 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 12995 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:54,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4726 Valid, 12995 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:50:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:50:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7984075280492218) internal successors, (4969), 2766 states have internal predecessors, (4969), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:50:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5060 transitions. [2022-01-10 07:50:54,297 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5060 transitions. Word has length 167 [2022-01-10 07:50:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:54,297 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5060 transitions. [2022-01-10 07:50:54,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5060 transitions. [2022-01-10 07:50:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:54,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:54,299 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] [2022-01-10 07:50:54,320 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 07:50:54,507 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 07:50:54,510 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash -325872558, now seen corresponding path program 1 times [2022-01-10 07:50:54,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:54,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205957534] [2022-01-10 07:50:54,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:54,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:54,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:54,515 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 07:50:54,516 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 07:50:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:54,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:54,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:54,927 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 07:50:54,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:54,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:54,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205957534] [2022-01-10 07:50:54,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205957534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:54,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:54,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:54,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704848339] [2022-01-10 07:50:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:54,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:54,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:54,929 INFO L87 Difference]: Start difference. First operand 2823 states and 5060 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:55,271 INFO L93 Difference]: Finished difference Result 3506 states and 6137 transitions. [2022-01-10 07:50:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:50:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:55,280 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:50:55,280 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:50:55,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:50:55,283 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 4701 mSDsluCounter, 8511 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 12988 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:55,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4720 Valid, 12988 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:50:55,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:50:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.795874049945711) internal successors, (4962), 2766 states have internal predecessors, (4962), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:50:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5053 transitions. [2022-01-10 07:50:55,349 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5053 transitions. Word has length 167 [2022-01-10 07:50:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:55,350 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5053 transitions. [2022-01-10 07:50:55,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5053 transitions. [2022-01-10 07:50:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:55,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:55,351 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] [2022-01-10 07:50:55,361 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 07:50:55,561 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 07:50:55,562 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:55,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash 524328662, now seen corresponding path program 1 times [2022-01-10 07:50:55,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:55,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418341039] [2022-01-10 07:50:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:55,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:55,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:55,564 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 07:50:55,566 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 07:50:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:55,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:55,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:55,938 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 07:50:55,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:55,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:55,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418341039] [2022-01-10 07:50:55,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418341039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:55,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:55,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:55,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755974827] [2022-01-10 07:50:55,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:55,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:55,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:55,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:55,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:55,941 INFO L87 Difference]: Start difference. First operand 2823 states and 5053 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:56,276 INFO L93 Difference]: Finished difference Result 3506 states and 6123 transitions. [2022-01-10 07:50:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:56,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:50:56,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:56,288 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:50:56,288 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:50:56,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:50:56,292 INFO L933 BasicCegarLoop]: 4474 mSDtfsCounter, 4695 mSDsluCounter, 8507 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4714 SdHoareTripleChecker+Valid, 12981 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:56,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4714 Valid, 12981 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:50:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:50:56,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7933405718422004) internal successors, (4955), 2766 states have internal predecessors, (4955), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:50:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5046 transitions. [2022-01-10 07:50:56,456 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5046 transitions. Word has length 167 [2022-01-10 07:50:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:56,457 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5046 transitions. [2022-01-10 07:50:56,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5046 transitions. [2022-01-10 07:50:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:56,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:56,458 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] [2022-01-10 07:50:56,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:50:56,667 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 07:50:56,667 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1387908142, now seen corresponding path program 1 times [2022-01-10 07:50:56,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:56,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295378477] [2022-01-10 07:50:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:56,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:56,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:56,670 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 07:50:56,672 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 07:50:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:56,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:56,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:57,036 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 07:50:57,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:57,036 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:57,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295378477] [2022-01-10 07:50:57,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295378477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:57,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:57,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:57,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345980967] [2022-01-10 07:50:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:57,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:57,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:57,038 INFO L87 Difference]: Start difference. First operand 2823 states and 5046 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:57,356 INFO L93 Difference]: Finished difference Result 3506 states and 6109 transitions. [2022-01-10 07:50:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:50:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:57,365 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:50:57,365 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:50:57,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:50:57,368 INFO L933 BasicCegarLoop]: 4471 mSDtfsCounter, 4689 mSDsluCounter, 8503 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 12974 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:57,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4708 Valid, 12974 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:50:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:50:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7908070937386897) internal successors, (4948), 2766 states have internal predecessors, (4948), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:50:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5039 transitions. [2022-01-10 07:50:57,428 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5039 transitions. Word has length 167 [2022-01-10 07:50:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:57,428 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5039 transitions. [2022-01-10 07:50:57,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5039 transitions. [2022-01-10 07:50:57,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:57,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:57,430 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] [2022-01-10 07:50:57,449 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 07:50:57,638 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 07:50:57,639 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash 905711446, now seen corresponding path program 1 times [2022-01-10 07:50:57,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011801182] [2022-01-10 07:50:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:57,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:57,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:57,641 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 07:50:57,655 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 07:50:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:57,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:57,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:58,001 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 07:50:58,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:58,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011801182] [2022-01-10 07:50:58,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011801182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:58,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:58,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:58,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232405427] [2022-01-10 07:50:58,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:58,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:58,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:58,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:58,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:58,004 INFO L87 Difference]: Start difference. First operand 2823 states and 5039 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:58,328 INFO L93 Difference]: Finished difference Result 3506 states and 6095 transitions. [2022-01-10 07:50:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:50:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:58,343 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:50:58,349 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:50:58,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:50:58,355 INFO L933 BasicCegarLoop]: 4468 mSDtfsCounter, 4683 mSDsluCounter, 8499 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 12967 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:58,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4702 Valid, 12967 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:50:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:50:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.788273615635179) internal successors, (4941), 2766 states have internal predecessors, (4941), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:50:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5032 transitions. [2022-01-10 07:50:58,428 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5032 transitions. Word has length 167 [2022-01-10 07:50:58,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:58,428 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5032 transitions. [2022-01-10 07:50:58,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:58,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5032 transitions. [2022-01-10 07:50:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:58,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:58,430 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] [2022-01-10 07:50:58,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 07:50:58,651 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 07:50:58,652 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash 286962514, now seen corresponding path program 1 times [2022-01-10 07:50:58,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:58,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462662626] [2022-01-10 07:50:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:58,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:58,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:58,668 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 07:50:58,701 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 07:50:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:58,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:58,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:59,032 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 07:50:59,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:59,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:59,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462662626] [2022-01-10 07:50:59,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462662626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:59,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:59,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:59,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868649457] [2022-01-10 07:50:59,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:59,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:59,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:59,034 INFO L87 Difference]: Start difference. First operand 2823 states and 5032 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:59,517 INFO L93 Difference]: Finished difference Result 3506 states and 6081 transitions. [2022-01-10 07:50:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:59,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:50:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:59,544 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:50:59,544 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:50:59,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:50:59,550 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 4676 mSDsluCounter, 8495 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 12960 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:59,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4695 Valid, 12960 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:50:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:50:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:50:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7857401375316684) internal successors, (4934), 2766 states have internal predecessors, (4934), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:50:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5025 transitions. [2022-01-10 07:50:59,642 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5025 transitions. Word has length 167 [2022-01-10 07:50:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:59,643 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5025 transitions. [2022-01-10 07:50:59,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:50:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5025 transitions. [2022-01-10 07:50:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:50:59,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:59,645 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] [2022-01-10 07:50:59,681 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 07:50:59,863 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 07:50:59,864 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2051679822, now seen corresponding path program 1 times [2022-01-10 07:50:59,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:59,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772761227] [2022-01-10 07:50:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:59,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:59,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:59,867 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 07:50:59,870 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 07:50:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:59,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:59,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:00,216 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 07:51:00,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:00,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:00,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772761227] [2022-01-10 07:51:00,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772761227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:00,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:00,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:00,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744748598] [2022-01-10 07:51:00,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:00,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:00,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:00,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:00,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:00,218 INFO L87 Difference]: Start difference. First operand 2823 states and 5025 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:00,558 INFO L93 Difference]: Finished difference Result 3506 states and 6067 transitions. [2022-01-10 07:51:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:51:00,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:00,565 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:51:00,565 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:51:00,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:00,567 INFO L933 BasicCegarLoop]: 4462 mSDtfsCounter, 4670 mSDsluCounter, 8491 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4689 SdHoareTripleChecker+Valid, 12953 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:00,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4689 Valid, 12953 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:51:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:51:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:51:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7832066594281577) internal successors, (4927), 2766 states have internal predecessors, (4927), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:51:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5018 transitions. [2022-01-10 07:51:00,636 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5018 transitions. Word has length 167 [2022-01-10 07:51:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:00,636 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5018 transitions. [2022-01-10 07:51:00,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:00,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5018 transitions. [2022-01-10 07:51:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:00,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:00,639 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] [2022-01-10 07:51:00,654 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 07:51:00,850 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 07:51:00,850 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:00,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:00,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1277322194, now seen corresponding path program 1 times [2022-01-10 07:51:00,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:00,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607254743] [2022-01-10 07:51:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:00,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:00,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:00,854 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 07:51:00,855 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 07:51:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:01,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:01,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:01,324 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 07:51:01,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:01,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:01,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607254743] [2022-01-10 07:51:01,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607254743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:01,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:01,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:01,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930205240] [2022-01-10 07:51:01,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:01,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:01,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:01,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:01,326 INFO L87 Difference]: Start difference. First operand 2823 states and 5018 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:01,660 INFO L93 Difference]: Finished difference Result 3506 states and 6053 transitions. [2022-01-10 07:51:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:51:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:01,665 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:51:01,665 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:51:01,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:01,667 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 4664 mSDsluCounter, 8487 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 12946 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:01,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4683 Valid, 12946 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:51:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:51:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:51:01,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.780673181324647) internal successors, (4920), 2766 states have internal predecessors, (4920), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:51:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5011 transitions. [2022-01-10 07:51:01,704 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5011 transitions. Word has length 167 [2022-01-10 07:51:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:01,704 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5011 transitions. [2022-01-10 07:51:01,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5011 transitions. [2022-01-10 07:51:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:01,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:01,705 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] [2022-01-10 07:51:01,730 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 07:51:01,913 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 07:51:01,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:01,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:01,914 INFO L85 PathProgramCache]: Analyzing trace with hash -548772402, now seen corresponding path program 1 times [2022-01-10 07:51:01,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:01,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203083070] [2022-01-10 07:51:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:01,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:01,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:01,916 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 07:51:01,917 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 07:51:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:02,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:02,193 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 07:51:02,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:02,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:02,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203083070] [2022-01-10 07:51:02,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203083070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:02,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:02,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:02,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384487735] [2022-01-10 07:51:02,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:02,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:02,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:02,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:02,201 INFO L87 Difference]: Start difference. First operand 2823 states and 5011 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:02,468 INFO L93 Difference]: Finished difference Result 3506 states and 6039 transitions. [2022-01-10 07:51:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:51:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:02,473 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:51:02,473 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:51:02,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:02,476 INFO L933 BasicCegarLoop]: 4456 mSDtfsCounter, 4658 mSDsluCounter, 8483 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 12939 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:02,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4677 Valid, 12939 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:51:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:51:02,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:51:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7781397032211363) internal successors, (4913), 2766 states have internal predecessors, (4913), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:51:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5004 transitions. [2022-01-10 07:51:02,517 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5004 transitions. Word has length 167 [2022-01-10 07:51:02,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:02,517 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5004 transitions. [2022-01-10 07:51:02,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5004 transitions. [2022-01-10 07:51:02,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:02,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:02,518 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] [2022-01-10 07:51:02,528 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 07:51:02,726 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 07:51:02,727 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash 777794642, now seen corresponding path program 1 times [2022-01-10 07:51:02,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:02,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020159932] [2022-01-10 07:51:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:02,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:02,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:02,729 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 07:51:02,731 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 07:51:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:02,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:02,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:03,078 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 07:51:03,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:03,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020159932] [2022-01-10 07:51:03,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020159932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:03,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:03,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:03,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165838092] [2022-01-10 07:51:03,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:03,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:03,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:03,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:03,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:03,080 INFO L87 Difference]: Start difference. First operand 2823 states and 5004 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:03,389 INFO L93 Difference]: Finished difference Result 3506 states and 6025 transitions. [2022-01-10 07:51:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:51:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:03,394 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 07:51:03,394 INFO L226 Difference]: Without dead ends: 2823 [2022-01-10 07:51:03,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:03,396 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 4652 mSDsluCounter, 8479 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 12932 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:03,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4671 Valid, 12932 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:51:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-01-10 07:51:03,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2022-01-10 07:51:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.7756062251176257) internal successors, (4906), 2766 states have internal predecessors, (4906), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:51:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 4997 transitions. [2022-01-10 07:51:03,434 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 4997 transitions. Word has length 167 [2022-01-10 07:51:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:03,434 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 4997 transitions. [2022-01-10 07:51:03,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:03,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 4997 transitions. [2022-01-10 07:51:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:03,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:03,435 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] [2022-01-10 07:51:03,455 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 07:51:03,643 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 07:51:03,643 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -564886194, now seen corresponding path program 1 times [2022-01-10 07:51:03,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:03,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651883853] [2022-01-10 07:51:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:03,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:03,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:03,659 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 07:51:03,660 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 07:51:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:03,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:03,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:03,997 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 07:51:03,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:03,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:03,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651883853] [2022-01-10 07:51:03,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651883853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:03,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:03,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:03,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172672448] [2022-01-10 07:51:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:03,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:03,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:03,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:03,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:03,999 INFO L87 Difference]: Start difference. First operand 2823 states and 4997 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:04,458 INFO L93 Difference]: Finished difference Result 3684 states and 6287 transitions. [2022-01-10 07:51:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:04,463 INFO L225 Difference]: With dead ends: 3684 [2022-01-10 07:51:04,463 INFO L226 Difference]: Without dead ends: 3001 [2022-01-10 07:51:04,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:04,465 INFO L933 BasicCegarLoop]: 4450 mSDtfsCounter, 4762 mSDsluCounter, 8474 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 12924 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:04,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4781 Valid, 12924 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2022-01-10 07:51:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 3001. [2022-01-10 07:51:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2935 states have (on average 1.751618398637138) internal successors, (5141), 2938 states have internal predecessors, (5141), 47 states have call successors, (47), 16 states have call predecessors, (47), 17 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:51:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 5236 transitions. [2022-01-10 07:51:04,508 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 5236 transitions. Word has length 167 [2022-01-10 07:51:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:04,508 INFO L470 AbstractCegarLoop]: Abstraction has 3001 states and 5236 transitions. [2022-01-10 07:51:04,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 5236 transitions. [2022-01-10 07:51:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:04,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:04,510 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] [2022-01-10 07:51:04,531 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 07:51:04,718 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 07:51:04,718 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:04,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash -82307693, now seen corresponding path program 1 times [2022-01-10 07:51:04,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:04,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785706839] [2022-01-10 07:51:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:04,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:04,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:04,720 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 07:51:04,721 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 07:51:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:04,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:04,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:05,081 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 07:51:05,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:05,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:05,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785706839] [2022-01-10 07:51:05,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785706839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:05,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:05,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:05,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105103062] [2022-01-10 07:51:05,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:05,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:05,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:05,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:05,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:05,082 INFO L87 Difference]: Start difference. First operand 3001 states and 5236 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:05,574 INFO L93 Difference]: Finished difference Result 4040 states and 6765 transitions. [2022-01-10 07:51:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:05,585 INFO L225 Difference]: With dead ends: 4040 [2022-01-10 07:51:05,585 INFO L226 Difference]: Without dead ends: 3179 [2022-01-10 07:51:05,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:05,595 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 4755 mSDsluCounter, 8470 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4774 SdHoareTripleChecker+Valid, 12918 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:05,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4774 Valid, 12918 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-01-10 07:51:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3179. [2022-01-10 07:51:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3107 states have (on average 1.728999034438365) internal successors, (5372), 3110 states have internal predecessors, (5372), 49 states have call successors, (49), 20 states have call predecessors, (49), 21 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:51:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5471 transitions. [2022-01-10 07:51:05,667 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5471 transitions. Word has length 167 [2022-01-10 07:51:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:05,667 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 5471 transitions. [2022-01-10 07:51:05,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5471 transitions. [2022-01-10 07:51:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:05,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:05,668 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] [2022-01-10 07:51:05,676 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 07:51:05,876 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 07:51:05,876 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash 229143951, now seen corresponding path program 1 times [2022-01-10 07:51:05,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:05,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997205733] [2022-01-10 07:51:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:05,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:05,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:05,878 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 07:51:05,880 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 07:51:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:06,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:06,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:06,296 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 07:51:06,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:06,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:06,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997205733] [2022-01-10 07:51:06,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997205733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:06,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:06,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:06,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003635050] [2022-01-10 07:51:06,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:06,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:06,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:06,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:06,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:06,298 INFO L87 Difference]: Start difference. First operand 3179 states and 5471 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:06,806 INFO L93 Difference]: Finished difference Result 4396 states and 7235 transitions. [2022-01-10 07:51:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:06,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:06,812 INFO L225 Difference]: With dead ends: 4396 [2022-01-10 07:51:06,813 INFO L226 Difference]: Without dead ends: 3357 [2022-01-10 07:51:06,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:06,816 INFO L933 BasicCegarLoop]: 4443 mSDtfsCounter, 4748 mSDsluCounter, 8466 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 12909 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:06,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4767 Valid, 12909 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2022-01-10 07:51:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3357. [2022-01-10 07:51:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3279 states have (on average 1.7075327843854833) internal successors, (5599), 3282 states have internal predecessors, (5599), 51 states have call successors, (51), 24 states have call predecessors, (51), 25 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:51:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 5702 transitions. [2022-01-10 07:51:06,896 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 5702 transitions. Word has length 167 [2022-01-10 07:51:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:06,896 INFO L470 AbstractCegarLoop]: Abstraction has 3357 states and 5702 transitions. [2022-01-10 07:51:06,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 5702 transitions. [2022-01-10 07:51:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:06,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:06,898 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] [2022-01-10 07:51:06,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:07,106 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 07:51:07,106 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:07,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1715735668, now seen corresponding path program 1 times [2022-01-10 07:51:07,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:07,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638534467] [2022-01-10 07:51:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:07,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:07,111 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 07:51:07,112 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 07:51:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:07,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:07,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:07,500 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 07:51:07,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:07,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:07,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638534467] [2022-01-10 07:51:07,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638534467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:07,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:07,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:07,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997019801] [2022-01-10 07:51:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:07,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:07,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:07,503 INFO L87 Difference]: Start difference. First operand 3357 states and 5702 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:08,037 INFO L93 Difference]: Finished difference Result 4752 states and 7697 transitions. [2022-01-10 07:51:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:08,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:08,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:08,062 INFO L225 Difference]: With dead ends: 4752 [2022-01-10 07:51:08,063 INFO L226 Difference]: Without dead ends: 3535 [2022-01-10 07:51:08,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:08,069 INFO L933 BasicCegarLoop]: 4440 mSDtfsCounter, 4741 mSDsluCounter, 8462 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 12902 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:08,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4760 Valid, 12902 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2022-01-10 07:51:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2022-01-10 07:51:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3451 states have (on average 1.6870472326861778) internal successors, (5822), 3454 states have internal predecessors, (5822), 53 states have call successors, (53), 28 states have call predecessors, (53), 29 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 07:51:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5929 transitions. [2022-01-10 07:51:08,195 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5929 transitions. Word has length 167 [2022-01-10 07:51:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:08,195 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 5929 transitions. [2022-01-10 07:51:08,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5929 transitions. [2022-01-10 07:51:08,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:08,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:08,197 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] [2022-01-10 07:51:08,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:51:08,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:08,433 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash -740559600, now seen corresponding path program 1 times [2022-01-10 07:51:08,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:08,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672637688] [2022-01-10 07:51:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:08,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:08,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:08,436 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:08,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:51:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:08,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:08,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:08,770 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 07:51:08,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:08,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:08,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672637688] [2022-01-10 07:51:08,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672637688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:08,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:08,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:08,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802947188] [2022-01-10 07:51:08,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:08,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:08,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:08,772 INFO L87 Difference]: Start difference. First operand 3535 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:09,334 INFO L93 Difference]: Finished difference Result 5108 states and 8151 transitions. [2022-01-10 07:51:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:09,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:09,344 INFO L225 Difference]: With dead ends: 5108 [2022-01-10 07:51:09,344 INFO L226 Difference]: Without dead ends: 3713 [2022-01-10 07:51:09,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:09,350 INFO L933 BasicCegarLoop]: 4437 mSDtfsCounter, 4734 mSDsluCounter, 8458 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 12895 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:09,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4753 Valid, 12895 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:09,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-01-10 07:51:09,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3713. [2022-01-10 07:51:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3623 states have (on average 1.667402704940657) internal successors, (6041), 3626 states have internal predecessors, (6041), 55 states have call successors, (55), 32 states have call predecessors, (55), 33 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 07:51:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 6152 transitions. [2022-01-10 07:51:09,491 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 6152 transitions. Word has length 167 [2022-01-10 07:51:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:09,491 INFO L470 AbstractCegarLoop]: Abstraction has 3713 states and 6152 transitions. [2022-01-10 07:51:09,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 6152 transitions. [2022-01-10 07:51:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:09,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:09,493 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] [2022-01-10 07:51:09,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:09,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:09,704 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:09,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1546435469, now seen corresponding path program 1 times [2022-01-10 07:51:09,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:09,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049972232] [2022-01-10 07:51:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:09,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:09,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:09,708 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:09,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:51:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:09,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:09,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:10,053 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 07:51:10,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:10,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:10,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049972232] [2022-01-10 07:51:10,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049972232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:10,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:10,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:10,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023581042] [2022-01-10 07:51:10,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:10,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:10,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:10,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:10,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:10,058 INFO L87 Difference]: Start difference. First operand 3713 states and 6152 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:10,656 INFO L93 Difference]: Finished difference Result 5464 states and 8597 transitions. [2022-01-10 07:51:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:10,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:10,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:10,663 INFO L225 Difference]: With dead ends: 5464 [2022-01-10 07:51:10,663 INFO L226 Difference]: Without dead ends: 3891 [2022-01-10 07:51:10,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:10,667 INFO L933 BasicCegarLoop]: 4434 mSDtfsCounter, 4727 mSDsluCounter, 8454 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 12888 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:10,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4746 Valid, 12888 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2022-01-10 07:51:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3891. [2022-01-10 07:51:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3891 states, 3795 states have (on average 1.6484848484848484) internal successors, (6256), 3798 states have internal predecessors, (6256), 57 states have call successors, (57), 36 states have call predecessors, (57), 37 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 07:51:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 6371 transitions. [2022-01-10 07:51:10,753 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 6371 transitions. Word has length 167 [2022-01-10 07:51:10,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:10,753 INFO L470 AbstractCegarLoop]: Abstraction has 3891 states and 6371 transitions. [2022-01-10 07:51:10,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 6371 transitions. [2022-01-10 07:51:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:10,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:10,754 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] [2022-01-10 07:51:10,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:10,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:10,963 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1252478481, now seen corresponding path program 1 times [2022-01-10 07:51:10,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:10,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697400092] [2022-01-10 07:51:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:10,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:10,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:11,016 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:11,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:51:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:11,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:11,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:51:11,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:11,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:11,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697400092] [2022-01-10 07:51:11,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697400092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:11,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:11,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:11,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298351238] [2022-01-10 07:51:11,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:11,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:11,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:11,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:11,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:11,418 INFO L87 Difference]: Start difference. First operand 3891 states and 6371 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:11,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:11,967 INFO L93 Difference]: Finished difference Result 5820 states and 9035 transitions. [2022-01-10 07:51:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:11,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:11,976 INFO L225 Difference]: With dead ends: 5820 [2022-01-10 07:51:11,977 INFO L226 Difference]: Without dead ends: 4069 [2022-01-10 07:51:11,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:11,981 INFO L933 BasicCegarLoop]: 4431 mSDtfsCounter, 4720 mSDsluCounter, 8450 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 12881 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:11,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 12881 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2022-01-10 07:51:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 4069. [2022-01-10 07:51:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 3967 states have (on average 1.6301991429291656) internal successors, (6467), 3970 states have internal predecessors, (6467), 59 states have call successors, (59), 40 states have call predecessors, (59), 41 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 07:51:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 6586 transitions. [2022-01-10 07:51:12,155 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 6586 transitions. Word has length 167 [2022-01-10 07:51:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:12,155 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 6586 transitions. [2022-01-10 07:51:12,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 6586 transitions. [2022-01-10 07:51:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:12,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:12,157 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] [2022-01-10 07:51:12,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:12,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:12,386 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash 829906190, now seen corresponding path program 1 times [2022-01-10 07:51:12,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:12,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981238973] [2022-01-10 07:51:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:12,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:12,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:12,404 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:12,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:51:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:12,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:12,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:12,766 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 07:51:12,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:12,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:12,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981238973] [2022-01-10 07:51:12,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981238973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:12,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:12,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:12,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175705936] [2022-01-10 07:51:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:12,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:12,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:12,769 INFO L87 Difference]: Start difference. First operand 4069 states and 6586 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:13,378 INFO L93 Difference]: Finished difference Result 6176 states and 9465 transitions. [2022-01-10 07:51:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:13,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:13,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:13,388 INFO L225 Difference]: With dead ends: 6176 [2022-01-10 07:51:13,388 INFO L226 Difference]: Without dead ends: 4247 [2022-01-10 07:51:13,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:13,393 INFO L933 BasicCegarLoop]: 4428 mSDtfsCounter, 4713 mSDsluCounter, 8446 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4732 SdHoareTripleChecker+Valid, 12874 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:13,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4732 Valid, 12874 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:13,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2022-01-10 07:51:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4247. [2022-01-10 07:51:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4139 states have (on average 1.6124667794153178) internal successors, (6674), 4142 states have internal predecessors, (6674), 61 states have call successors, (61), 44 states have call predecessors, (61), 45 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 07:51:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 6797 transitions. [2022-01-10 07:51:13,550 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 6797 transitions. Word has length 167 [2022-01-10 07:51:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:13,550 INFO L470 AbstractCegarLoop]: Abstraction has 4247 states and 6797 transitions. [2022-01-10 07:51:13,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:13,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 6797 transitions. [2022-01-10 07:51:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:13,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:13,552 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] [2022-01-10 07:51:13,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:13,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:13,771 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1682128750, now seen corresponding path program 1 times [2022-01-10 07:51:13,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:13,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365649319] [2022-01-10 07:51:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:13,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:13,775 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:13,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:51:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:13,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:13,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:14,166 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 07:51:14,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:14,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:14,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365649319] [2022-01-10 07:51:14,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365649319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:14,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:14,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:14,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971155774] [2022-01-10 07:51:14,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:14,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:14,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:14,168 INFO L87 Difference]: Start difference. First operand 4247 states and 6797 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:14,770 INFO L93 Difference]: Finished difference Result 6532 states and 9887 transitions. [2022-01-10 07:51:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:14,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:14,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:14,781 INFO L225 Difference]: With dead ends: 6532 [2022-01-10 07:51:14,781 INFO L226 Difference]: Without dead ends: 4425 [2022-01-10 07:51:14,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:14,788 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4706 mSDsluCounter, 8442 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4725 SdHoareTripleChecker+Valid, 12867 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:14,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4725 Valid, 12867 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2022-01-10 07:51:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4425. [2022-01-10 07:51:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4425 states, 4311 states have (on average 1.595221526327998) internal successors, (6877), 4314 states have internal predecessors, (6877), 63 states have call successors, (63), 48 states have call predecessors, (63), 49 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 07:51:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 7004 transitions. [2022-01-10 07:51:15,025 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 7004 transitions. Word has length 167 [2022-01-10 07:51:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:15,026 INFO L470 AbstractCegarLoop]: Abstraction has 4425 states and 7004 transitions. [2022-01-10 07:51:15,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 7004 transitions. [2022-01-10 07:51:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:15,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:15,027 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] [2022-01-10 07:51:15,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:15,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:15,239 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash 60692495, now seen corresponding path program 1 times [2022-01-10 07:51:15,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:15,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59625999] [2022-01-10 07:51:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:15,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:15,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:15,241 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:15,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:51:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:15,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:15,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:15,533 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 07:51:15,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:15,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:15,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59625999] [2022-01-10 07:51:15,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59625999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:15,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:15,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:15,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162181748] [2022-01-10 07:51:15,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:15,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:15,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:15,535 INFO L87 Difference]: Start difference. First operand 4425 states and 7004 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:16,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:16,078 INFO L93 Difference]: Finished difference Result 6888 states and 10301 transitions. [2022-01-10 07:51:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:16,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:16,087 INFO L225 Difference]: With dead ends: 6888 [2022-01-10 07:51:16,087 INFO L226 Difference]: Without dead ends: 4603 [2022-01-10 07:51:16,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 07:51:16,092 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 4698 mSDsluCounter, 8438 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 12860 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:16,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 12860 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:51:16,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2022-01-10 07:51:16,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 4603. [2022-01-10 07:51:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4483 states have (on average 1.57840731652911) internal successors, (7076), 4486 states have internal predecessors, (7076), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:51:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 7207 transitions. [2022-01-10 07:51:16,273 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 7207 transitions. Word has length 167 [2022-01-10 07:51:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:16,274 INFO L470 AbstractCegarLoop]: Abstraction has 4603 states and 7207 transitions. [2022-01-10 07:51:16,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 7207 transitions. [2022-01-10 07:51:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:16,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:16,275 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] [2022-01-10 07:51:16,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:16,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:16,488 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -613238772, now seen corresponding path program 1 times [2022-01-10 07:51:16,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:16,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140633237] [2022-01-10 07:51:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:16,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:16,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:16,491 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:16,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:51:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:16,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:16,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:16,814 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 07:51:16,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:16,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:16,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140633237] [2022-01-10 07:51:16,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140633237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:16,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:16,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:16,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621705897] [2022-01-10 07:51:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:16,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:16,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:16,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:16,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:16,817 INFO L87 Difference]: Start difference. First operand 4603 states and 7207 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:17,095 INFO L93 Difference]: Finished difference Result 7387 states and 10892 transitions. [2022-01-10 07:51:17,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:17,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:17,107 INFO L225 Difference]: With dead ends: 7387 [2022-01-10 07:51:17,108 INFO L226 Difference]: Without dead ends: 4925 [2022-01-10 07:51:17,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:17,115 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 441 mSDsluCounter, 13518 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 17966 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 07:51:17,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 17966 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2022-01-10 07:51:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4609. [2022-01-10 07:51:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 4489 states have (on average 1.5731788817108487) internal successors, (7062), 4492 states have internal predecessors, (7062), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:51:17,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 7193 transitions. [2022-01-10 07:51:17,323 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 7193 transitions. Word has length 167 [2022-01-10 07:51:17,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:17,324 INFO L470 AbstractCegarLoop]: Abstraction has 4609 states and 7193 transitions. [2022-01-10 07:51:17,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 7193 transitions. [2022-01-10 07:51:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:17,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:17,325 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] [2022-01-10 07:51:17,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:51:17,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:17,537 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1113906190, now seen corresponding path program 1 times [2022-01-10 07:51:17,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:17,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618505755] [2022-01-10 07:51:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:17,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:17,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:17,539 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:17,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:51:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:17,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:17,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:17,829 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 07:51:17,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:17,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:17,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618505755] [2022-01-10 07:51:17,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618505755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:17,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:17,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:17,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831606435] [2022-01-10 07:51:17,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:17,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:17,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:17,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:17,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:17,831 INFO L87 Difference]: Start difference. First operand 4609 states and 7193 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:18,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:18,083 INFO L93 Difference]: Finished difference Result 7371 states and 10828 transitions. [2022-01-10 07:51:18,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:18,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:18,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:18,095 INFO L225 Difference]: With dead ends: 7371 [2022-01-10 07:51:18,095 INFO L226 Difference]: Without dead ends: 4903 [2022-01-10 07:51:18,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:18,102 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 402 mSDsluCounter, 13503 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 17951 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 07:51:18,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 17951 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2022-01-10 07:51:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4615. [2022-01-10 07:51:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4615 states, 4495 states have (on average 1.567964404894327) internal successors, (7048), 4498 states have internal predecessors, (7048), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:51:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4615 states to 4615 states and 7179 transitions. [2022-01-10 07:51:18,316 INFO L78 Accepts]: Start accepts. Automaton has 4615 states and 7179 transitions. Word has length 167 [2022-01-10 07:51:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:18,316 INFO L470 AbstractCegarLoop]: Abstraction has 4615 states and 7179 transitions. [2022-01-10 07:51:18,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:18,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4615 states and 7179 transitions. [2022-01-10 07:51:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:18,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:18,318 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] [2022-01-10 07:51:18,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:18,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:18,529 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:18,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:18,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1027954288, now seen corresponding path program 1 times [2022-01-10 07:51:18,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:18,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007202731] [2022-01-10 07:51:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:18,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:18,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:18,532 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:18,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:51:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:18,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:51:18,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:18,825 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 07:51:18,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:18,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:18,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007202731] [2022-01-10 07:51:18,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007202731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:18,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:18,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:51:18,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088800631] [2022-01-10 07:51:18,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:18,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:51:18,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:18,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:51:18,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:51:18,827 INFO L87 Difference]: Start difference. First operand 4615 states and 7179 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 07:51:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:19,260 INFO L93 Difference]: Finished difference Result 9354 states and 13317 transitions. [2022-01-10 07:51:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:51:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:19,274 INFO L225 Difference]: With dead ends: 9354 [2022-01-10 07:51:19,274 INFO L226 Difference]: Without dead ends: 6880 [2022-01-10 07:51:19,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 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 07:51:19,282 INFO L933 BasicCegarLoop]: 4521 mSDtfsCounter, 4376 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4376 SdHoareTripleChecker+Valid, 4971 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 07:51:19,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4376 Valid, 4971 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6880 states. [2022-01-10 07:51:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6880 to 6874. [2022-01-10 07:51:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6874 states, 6648 states have (on average 1.4757821901323707) internal successors, (9811), 6652 states have internal predecessors, (9811), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6874 states to 6874 states and 10057 transitions. [2022-01-10 07:51:19,657 INFO L78 Accepts]: Start accepts. Automaton has 6874 states and 10057 transitions. Word has length 167 [2022-01-10 07:51:19,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:19,657 INFO L470 AbstractCegarLoop]: Abstraction has 6874 states and 10057 transitions. [2022-01-10 07:51:19,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 07:51:19,657 INFO L276 IsEmpty]: Start isEmpty. Operand 6874 states and 10057 transitions. [2022-01-10 07:51:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:19,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:19,661 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] [2022-01-10 07:51:19,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 07:51:19,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:19,869 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:19,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash -740494383, now seen corresponding path program 1 times [2022-01-10 07:51:19,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:19,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737638924] [2022-01-10 07:51:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:19,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:19,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:19,871 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:19,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:51:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:20,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:20,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:20,188 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 07:51:20,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:20,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:20,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737638924] [2022-01-10 07:51:20,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737638924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:20,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:20,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:20,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692497826] [2022-01-10 07:51:20,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:20,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:20,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:20,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:20,189 INFO L87 Difference]: Start difference. First operand 6874 states and 10057 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:20,619 INFO L93 Difference]: Finished difference Result 14533 states and 20039 transitions. [2022-01-10 07:51:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:20,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:20,635 INFO L225 Difference]: With dead ends: 14533 [2022-01-10 07:51:20,635 INFO L226 Difference]: Without dead ends: 9800 [2022-01-10 07:51:20,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:20,645 INFO L933 BasicCegarLoop]: 4454 mSDtfsCounter, 369 mSDsluCounter, 13535 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 17989 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 07:51:20,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 17989 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2022-01-10 07:51:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 6940. [2022-01-10 07:51:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6940 states, 6714 states have (on average 1.4681263032469467) internal successors, (9857), 6718 states have internal predecessors, (9857), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6940 states to 6940 states and 10103 transitions. [2022-01-10 07:51:21,020 INFO L78 Accepts]: Start accepts. Automaton has 6940 states and 10103 transitions. Word has length 167 [2022-01-10 07:51:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:21,020 INFO L470 AbstractCegarLoop]: Abstraction has 6940 states and 10103 transitions. [2022-01-10 07:51:21,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6940 states and 10103 transitions. [2022-01-10 07:51:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:21,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:21,021 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] [2022-01-10 07:51:21,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:21,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:21,229 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:21,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2047636781, now seen corresponding path program 1 times [2022-01-10 07:51:21,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:21,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351214628] [2022-01-10 07:51:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:21,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:21,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:21,231 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:21,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:51:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:21,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:21,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:21,562 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 07:51:21,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:21,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:21,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351214628] [2022-01-10 07:51:21,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351214628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:21,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:21,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:21,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431040972] [2022-01-10 07:51:21,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:21,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:21,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:21,563 INFO L87 Difference]: Start difference. First operand 6940 states and 10103 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:21,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:21,894 INFO L93 Difference]: Finished difference Result 11977 states and 16617 transitions. [2022-01-10 07:51:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:21,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:21,907 INFO L225 Difference]: With dead ends: 11977 [2022-01-10 07:51:21,908 INFO L226 Difference]: Without dead ends: 7178 [2022-01-10 07:51:21,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:21,930 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 323 mSDsluCounter, 13468 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 17916 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 07:51:21,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 17916 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2022-01-10 07:51:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 6946. [2022-01-10 07:51:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6720 states have (on average 1.4617559523809525) internal successors, (9823), 6724 states have internal predecessors, (9823), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10069 transitions. [2022-01-10 07:51:22,396 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10069 transitions. Word has length 167 [2022-01-10 07:51:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:22,396 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 10069 transitions. [2022-01-10 07:51:22,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10069 transitions. [2022-01-10 07:51:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:22,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:22,398 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] [2022-01-10 07:51:22,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:22,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:22,610 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:22,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:22,610 INFO L85 PathProgramCache]: Analyzing trace with hash -696251563, now seen corresponding path program 1 times [2022-01-10 07:51:22,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:22,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973056501] [2022-01-10 07:51:22,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:22,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:22,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:22,612 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:22,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:51:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:22,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:22,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:22,873 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 07:51:22,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:22,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:22,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973056501] [2022-01-10 07:51:22,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973056501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:22,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:22,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:22,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120850957] [2022-01-10 07:51:22,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:22,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:22,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:22,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:22,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:22,874 INFO L87 Difference]: Start difference. First operand 6946 states and 10069 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:23,439 INFO L93 Difference]: Finished difference Result 12115 states and 16713 transitions. [2022-01-10 07:51:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:23,454 INFO L225 Difference]: With dead ends: 12115 [2022-01-10 07:51:23,454 INFO L226 Difference]: Without dead ends: 7310 [2022-01-10 07:51:23,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:23,462 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 245 mSDsluCounter, 13438 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 17886 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 07:51:23,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 17886 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:23,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2022-01-10 07:51:23,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 6958. [2022-01-10 07:51:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 6732 states have (on average 1.4552881758764111) internal successors, (9797), 6736 states have internal predecessors, (9797), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10043 transitions. [2022-01-10 07:51:23,941 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10043 transitions. Word has length 167 [2022-01-10 07:51:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:23,941 INFO L470 AbstractCegarLoop]: Abstraction has 6958 states and 10043 transitions. [2022-01-10 07:51:23,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10043 transitions. [2022-01-10 07:51:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:23,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:23,943 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] [2022-01-10 07:51:23,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:24,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:24,164 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash 628604631, now seen corresponding path program 1 times [2022-01-10 07:51:24,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:24,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305011888] [2022-01-10 07:51:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:24,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:24,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:24,166 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:24,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:51:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:24,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:24,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:24,481 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 07:51:24,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:24,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:24,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305011888] [2022-01-10 07:51:24,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305011888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:24,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:24,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:24,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570723518] [2022-01-10 07:51:24,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:24,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:24,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:24,482 INFO L87 Difference]: Start difference. First operand 6958 states and 10043 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:24,973 INFO L93 Difference]: Finished difference Result 12083 states and 16589 transitions. [2022-01-10 07:51:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:24,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:24,989 INFO L225 Difference]: With dead ends: 12083 [2022-01-10 07:51:24,990 INFO L226 Difference]: Without dead ends: 7266 [2022-01-10 07:51:24,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:25,004 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 206 mSDsluCounter, 13423 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 17871 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 07:51:25,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 17871 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7266 states. [2022-01-10 07:51:25,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7266 to 6970. [2022-01-10 07:51:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6970 states, 6744 states have (on average 1.4488434163701067) internal successors, (9771), 6748 states have internal predecessors, (9771), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6970 states to 6970 states and 10017 transitions. [2022-01-10 07:51:25,494 INFO L78 Accepts]: Start accepts. Automaton has 6970 states and 10017 transitions. Word has length 167 [2022-01-10 07:51:25,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:25,494 INFO L470 AbstractCegarLoop]: Abstraction has 6970 states and 10017 transitions. [2022-01-10 07:51:25,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:25,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6970 states and 10017 transitions. [2022-01-10 07:51:25,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:25,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:25,496 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] [2022-01-10 07:51:25,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:25,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:25,707 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:25,707 INFO L85 PathProgramCache]: Analyzing trace with hash 655670233, now seen corresponding path program 1 times [2022-01-10 07:51:25,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:25,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970801370] [2022-01-10 07:51:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:25,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:25,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:25,709 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:25,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:51:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:25,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:25,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:26,061 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 07:51:26,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:26,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:26,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970801370] [2022-01-10 07:51:26,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970801370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:26,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:26,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:26,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788618470] [2022-01-10 07:51:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:26,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:26,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:26,063 INFO L87 Difference]: Start difference. First operand 6970 states and 10017 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:26,647 INFO L93 Difference]: Finished difference Result 12051 states and 16465 transitions. [2022-01-10 07:51:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:26,663 INFO L225 Difference]: With dead ends: 12051 [2022-01-10 07:51:26,663 INFO L226 Difference]: Without dead ends: 7222 [2022-01-10 07:51:26,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:26,672 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 167 mSDsluCounter, 13408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 17856 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 07:51:26,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 17856 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:26,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2022-01-10 07:51:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 6982. [2022-01-10 07:51:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6982 states, 6756 states have (on average 1.442421551213736) internal successors, (9745), 6760 states have internal predecessors, (9745), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 9991 transitions. [2022-01-10 07:51:27,164 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 9991 transitions. Word has length 167 [2022-01-10 07:51:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:27,164 INFO L470 AbstractCegarLoop]: Abstraction has 6982 states and 9991 transitions. [2022-01-10 07:51:27,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 9991 transitions. [2022-01-10 07:51:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:27,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:27,166 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] [2022-01-10 07:51:27,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:27,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:27,377 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -311680421, now seen corresponding path program 1 times [2022-01-10 07:51:27,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056473519] [2022-01-10 07:51:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:27,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:27,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:27,379 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:27,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:51:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:27,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:27,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:27,725 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 07:51:27,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:27,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:27,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056473519] [2022-01-10 07:51:27,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056473519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:27,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:27,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:27,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111660336] [2022-01-10 07:51:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:27,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:27,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:27,736 INFO L87 Difference]: Start difference. First operand 6982 states and 9991 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:28,273 INFO L93 Difference]: Finished difference Result 12019 states and 16341 transitions. [2022-01-10 07:51:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:28,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:28,291 INFO L225 Difference]: With dead ends: 12019 [2022-01-10 07:51:28,291 INFO L226 Difference]: Without dead ends: 7178 [2022-01-10 07:51:28,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:28,302 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 128 mSDsluCounter, 13393 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 17841 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 07:51:28,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 17841 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:28,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2022-01-10 07:51:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 6994. [2022-01-10 07:51:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6994 states, 6768 states have (on average 1.4360224586288417) internal successors, (9719), 6772 states have internal predecessors, (9719), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 9965 transitions. [2022-01-10 07:51:28,761 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 9965 transitions. Word has length 167 [2022-01-10 07:51:28,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:28,761 INFO L470 AbstractCegarLoop]: Abstraction has 6994 states and 9965 transitions. [2022-01-10 07:51:28,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 9965 transitions. [2022-01-10 07:51:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:28,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:28,762 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] [2022-01-10 07:51:28,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:28,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:28,970 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1997860259, now seen corresponding path program 1 times [2022-01-10 07:51:28,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:28,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945728882] [2022-01-10 07:51:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:28,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:28,972 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:28,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:51:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:29,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:29,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:29,424 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 07:51:29,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:29,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:29,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945728882] [2022-01-10 07:51:29,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945728882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:29,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:29,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:29,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132269565] [2022-01-10 07:51:29,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:29,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:29,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:29,426 INFO L87 Difference]: Start difference. First operand 6994 states and 9965 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:29,855 INFO L93 Difference]: Finished difference Result 11987 states and 16217 transitions. [2022-01-10 07:51:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:29,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:29,868 INFO L225 Difference]: With dead ends: 11987 [2022-01-10 07:51:29,868 INFO L226 Difference]: Without dead ends: 7134 [2022-01-10 07:51:29,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:29,878 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 89 mSDsluCounter, 13378 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 17826 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 07:51:29,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 17826 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2022-01-10 07:51:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7006. [2022-01-10 07:51:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 6780 states have (on average 1.429646017699115) internal successors, (9693), 6784 states have internal predecessors, (9693), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 9939 transitions. [2022-01-10 07:51:30,215 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 9939 transitions. Word has length 167 [2022-01-10 07:51:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:30,215 INFO L470 AbstractCegarLoop]: Abstraction has 7006 states and 9939 transitions. [2022-01-10 07:51:30,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 9939 transitions. [2022-01-10 07:51:30,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:30,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:30,216 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] [2022-01-10 07:51:30,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:30,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:30,424 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1437160481, now seen corresponding path program 1 times [2022-01-10 07:51:30,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:30,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434983090] [2022-01-10 07:51:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:30,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:30,433 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:30,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 07:51:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:30,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:30,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:30,769 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 07:51:30,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:30,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:30,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434983090] [2022-01-10 07:51:30,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434983090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:30,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:30,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:30,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489588679] [2022-01-10 07:51:30,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:30,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:30,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:30,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:30,772 INFO L87 Difference]: Start difference. First operand 7006 states and 9939 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:31,464 INFO L93 Difference]: Finished difference Result 12753 states and 17095 transitions. [2022-01-10 07:51:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:31,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:31,480 INFO L225 Difference]: With dead ends: 12753 [2022-01-10 07:51:31,480 INFO L226 Difference]: Without dead ends: 7888 [2022-01-10 07:51:31,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:31,488 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 50 mSDsluCounter, 13363 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 17811 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 07:51:31,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 17811 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7888 states. [2022-01-10 07:51:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7888 to 7132. [2022-01-10 07:51:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 6906 states have (on average 1.4218071242397914) internal successors, (9819), 6910 states have internal predecessors, (9819), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10065 transitions. [2022-01-10 07:51:32,048 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10065 transitions. Word has length 167 [2022-01-10 07:51:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:32,048 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10065 transitions. [2022-01-10 07:51:32,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10065 transitions. [2022-01-10 07:51:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:32,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:32,050 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] [2022-01-10 07:51:32,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 07:51:32,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:32,256 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:32,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:32,257 INFO L85 PathProgramCache]: Analyzing trace with hash -993259807, now seen corresponding path program 1 times [2022-01-10 07:51:32,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:32,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83369303] [2022-01-10 07:51:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:32,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:32,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:32,259 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:32,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 07:51:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:32,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:51:32,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:32,610 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 07:51:32,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:32,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:32,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83369303] [2022-01-10 07:51:32,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83369303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:32,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:32,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:51:32,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688683772] [2022-01-10 07:51:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:32,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:51:32,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:51:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:51:32,611 INFO L87 Difference]: Start difference. First operand 7132 states and 10065 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:33,185 INFO L93 Difference]: Finished difference Result 12151 states and 16265 transitions. [2022-01-10 07:51:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:51:33,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:33,204 INFO L225 Difference]: With dead ends: 12151 [2022-01-10 07:51:33,204 INFO L226 Difference]: Without dead ends: 7160 [2022-01-10 07:51:33,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 07:51:33,214 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 10 mSDsluCounter, 13343 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17791 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 07:51:33,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17791 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2022-01-10 07:51:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 7144. [2022-01-10 07:51:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7144 states, 6918 states have (on average 1.4155825383058687) internal successors, (9793), 6922 states have internal predecessors, (9793), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2022-01-10 07:51:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 10039 transitions. [2022-01-10 07:51:33,820 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 10039 transitions. Word has length 167 [2022-01-10 07:51:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:33,821 INFO L470 AbstractCegarLoop]: Abstraction has 7144 states and 10039 transitions. [2022-01-10 07:51:33,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 07:51:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 10039 transitions. [2022-01-10 07:51:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 07:51:33,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:33,822 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] [2022-01-10 07:51:33,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:34,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:34,034 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:34,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1346348189, now seen corresponding path program 1 times [2022-01-10 07:51:34,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:34,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404843031] [2022-01-10 07:51:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:34,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:34,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:34,036 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:34,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 07:51:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:34,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:51:34,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:34,390 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 07:51:34,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:34,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:34,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404843031] [2022-01-10 07:51:34,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404843031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:34,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:34,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:51:34,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103080060] [2022-01-10 07:51:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:34,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:51:34,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:34,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:51:34,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:51:34,392 INFO L87 Difference]: Start difference. First operand 7144 states and 10039 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 07:51:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:35,109 INFO L93 Difference]: Finished difference Result 17081 states and 22143 transitions. [2022-01-10 07:51:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:51:35,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 167 [2022-01-10 07:51:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:35,132 INFO L225 Difference]: With dead ends: 17081 [2022-01-10 07:51:35,132 INFO L226 Difference]: Without dead ends: 12078 [2022-01-10 07:51:35,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 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 07:51:35,144 INFO L933 BasicCegarLoop]: 4470 mSDtfsCounter, 4276 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4276 SdHoareTripleChecker+Valid, 4920 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 07:51:35,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4276 Valid, 4920 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-01-10 07:51:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 12074. [2022-01-10 07:51:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12074 states, 11628 states have (on average 1.3301513587891296) internal successors, (15467), 11638 states have internal predecessors, (15467), 240 states have call successors, (240), 200 states have call predecessors, (240), 204 states have return successors, (244), 236 states have call predecessors, (244), 240 states have call successors, (244) [2022-01-10 07:51:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12074 states to 12074 states and 15951 transitions. [2022-01-10 07:51:35,967 INFO L78 Accepts]: Start accepts. Automaton has 12074 states and 15951 transitions. Word has length 167 [2022-01-10 07:51:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:35,967 INFO L470 AbstractCegarLoop]: Abstraction has 12074 states and 15951 transitions. [2022-01-10 07:51:35,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 07:51:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 12074 states and 15951 transitions. [2022-01-10 07:51:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-01-10 07:51:35,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:35,974 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:35,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 07:51:36,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:36,183 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:36,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1884041231, now seen corresponding path program 1 times [2022-01-10 07:51:36,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:36,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173648052] [2022-01-10 07:51:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:36,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:36,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:36,185 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:36,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 07:51:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:51:36,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 07:51:36,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:36,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:36,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173648052] [2022-01-10 07:51:36,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173648052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:36,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:36,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:36,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972817850] [2022-01-10 07:51:36,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:36,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:51:36,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:51:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:51:36,810 INFO L87 Difference]: Start difference. First operand 12074 states and 15951 transitions. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 07:51:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:39,410 INFO L93 Difference]: Finished difference Result 32424 states and 40407 transitions. [2022-01-10 07:51:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:39,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 272 [2022-01-10 07:51:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:39,471 INFO L225 Difference]: With dead ends: 32424 [2022-01-10 07:51:39,472 INFO L226 Difference]: Without dead ends: 22492 [2022-01-10 07:51:39,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 270 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 07:51:39,495 INFO L933 BasicCegarLoop]: 4668 mSDtfsCounter, 4619 mSDsluCounter, 4817 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 9485 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:39,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4625 Valid, 9485 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:51:39,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22492 states. [2022-01-10 07:51:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22492 to 22490. [2022-01-10 07:51:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22490 states, 21593 states have (on average 1.2698096605381373) internal successors, (27419), 21620 states have internal predecessors, (27419), 471 states have call successors, (471), 400 states have call predecessors, (471), 424 states have return successors, (519), 471 states have call predecessors, (519), 471 states have call successors, (519) [2022-01-10 07:51:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22490 states to 22490 states and 28409 transitions. [2022-01-10 07:51:41,942 INFO L78 Accepts]: Start accepts. Automaton has 22490 states and 28409 transitions. Word has length 272 [2022-01-10 07:51:41,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:41,942 INFO L470 AbstractCegarLoop]: Abstraction has 22490 states and 28409 transitions. [2022-01-10 07:51:41,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 07:51:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand 22490 states and 28409 transitions. [2022-01-10 07:51:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-01-10 07:51:41,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:41,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:41,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:42,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:42,193 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1866753681, now seen corresponding path program 1 times [2022-01-10 07:51:42,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:42,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844651907] [2022-01-10 07:51:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:42,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:42,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:42,195 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:42,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 07:51:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:42,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:51:42,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 07:51:42,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:42,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:42,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844651907] [2022-01-10 07:51:42,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844651907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:42,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:42,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:51:42,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900389981] [2022-01-10 07:51:42,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:42,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:51:42,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:51:42,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:51:42,678 INFO L87 Difference]: Start difference. First operand 22490 states and 28409 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 07:51:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:45,113 INFO L93 Difference]: Finished difference Result 42824 states and 52798 transitions. [2022-01-10 07:51:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:51:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 272 [2022-01-10 07:51:45,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:45,179 INFO L225 Difference]: With dead ends: 42824 [2022-01-10 07:51:45,179 INFO L226 Difference]: Without dead ends: 22476 [2022-01-10 07:51:45,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 270 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 07:51:45,214 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 484 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 8407 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 07:51:45,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 8407 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22476 states.