/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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:15:06,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:15:06,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:15:06,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:15:06,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:15:06,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:15:06,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:15:06,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:15:06,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:15:06,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:15:06,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:15:06,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:15:06,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:15:06,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:15:06,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:15:06,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:15:06,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:15:06,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:15:06,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:15:06,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:15:06,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:15:06,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:15:06,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:15:06,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:15:06,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:15:06,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:15:06,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:15:06,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:15:06,586 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 07:15:06,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:15:06,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:15:06,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:15:06,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:15:06,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:15:06,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:15:06,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:15:06,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:15:06,613 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:15:06,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:15:06,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:15:06,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:15:06,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:15:06,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:15:06,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:15:06,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:15:06,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:15:06,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:15:06,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:15:06,615 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:15:06,615 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:15:06,616 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:15:06,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:15:06,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:15:06,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:15:06,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:15:06,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:15:06,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:15:06,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:15:06,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:15:06,815 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:15:06,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-01-10 07:15:06,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3addce9a/606724c844d247f6b1d1d21d3a0d0580/FLAGc639ea416 [2022-01-10 07:15:07,394 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:15:07,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-01-10 07:15:07,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3addce9a/606724c844d247f6b1d1d21d3a0d0580/FLAGc639ea416 [2022-01-10 07:15:07,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3addce9a/606724c844d247f6b1d1d21d3a0d0580 [2022-01-10 07:15:07,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:15:07,618 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:15:07,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:15:07,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:15:07,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:15:07,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:15:07" (1/1) ... [2022-01-10 07:15:07,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0fa883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:07, skipping insertion in model container [2022-01-10 07:15:07,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:15:07" (1/1) ... [2022-01-10 07:15:07,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:15:07,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:15:07,947 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16948,16961] [2022-01-10 07:15:07,966 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23372,23385] [2022-01-10 07:15:07,974 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26559,26572] [2022-01-10 07:15:07,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29535,29548] [2022-01-10 07:15:07,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33298,33311] [2022-01-10 07:15:08,000 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36350,36363] [2022-01-10 07:15:08,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39535,39548] [2022-01-10 07:15:08,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42506,42519] [2022-01-10 07:15:08,023 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45890,45903] [2022-01-10 07:15:08,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48876,48889] [2022-01-10 07:15:08,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[52025,52038] [2022-01-10 07:15:08,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:15:08,068 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:15:08,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16948,16961] [2022-01-10 07:15:08,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23372,23385] [2022-01-10 07:15:08,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26559,26572] [2022-01-10 07:15:08,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29535,29548] [2022-01-10 07:15:08,172 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33298,33311] [2022-01-10 07:15:08,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36350,36363] [2022-01-10 07:15:08,190 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39535,39548] [2022-01-10 07:15:08,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42506,42519] [2022-01-10 07:15:08,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45890,45903] [2022-01-10 07:15:08,229 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48876,48889] [2022-01-10 07:15:08,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[52025,52038] [2022-01-10 07:15:08,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:15:08,283 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:15:08,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08 WrapperNode [2022-01-10 07:15:08,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:15:08,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:15:08,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:15:08,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:15:08,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,391 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2568 [2022-01-10 07:15:08,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:15:08,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:15:08,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:15:08,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:15:08,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:15:08,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:15:08,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:15:08,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:15:08,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (1/1) ... [2022-01-10 07:15:08,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:15:08,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:15:08,502 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 07:15:08,547 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 07:15:08,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:15:08,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:15:08,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:15:08,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:15:08,726 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:15:08,727 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:15:10,039 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:15:10,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:15:10,051 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:15:10,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:15:10 BoogieIcfgContainer [2022-01-10 07:15:10,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:15:10,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:15:10,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:15:10,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:15:10,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:15:07" (1/3) ... [2022-01-10 07:15:10,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45387af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:15:10, skipping insertion in model container [2022-01-10 07:15:10,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:15:08" (2/3) ... [2022-01-10 07:15:10,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45387af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:15:10, skipping insertion in model container [2022-01-10 07:15:10,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:15:10" (3/3) ... [2022-01-10 07:15:10,061 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-01-10 07:15:10,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:15:10,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-01-10 07:15:10,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:15:10,118 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 07:15:10,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-01-10 07:15:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 537 states, 525 states have (on average 1.8304761904761904) internal successors, (961), 536 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:10,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 07:15:10,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:10,161 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] [2022-01-10 07:15:10,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash 702631990, now seen corresponding path program 1 times [2022-01-10 07:15:10,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:10,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608476260] [2022-01-10 07:15:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:10,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:10,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:10,199 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 07:15:10,240 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 07:15:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:10,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:15:10,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:10,870 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 07:15:10,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:10,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:10,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608476260] [2022-01-10 07:15:10,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608476260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:10,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:10,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:15:10,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843510299] [2022-01-10 07:15:10,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:10,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:15:10,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:15:10,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:15:10,904 INFO L87 Difference]: Start difference. First operand has 537 states, 525 states have (on average 1.8304761904761904) internal successors, (961), 536 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:11,247 INFO L93 Difference]: Finished difference Result 694 states and 1200 transitions. [2022-01-10 07:15:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:15:11,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 07:15:11,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:11,258 INFO L225 Difference]: With dead ends: 694 [2022-01-10 07:15:11,258 INFO L226 Difference]: Without dead ends: 457 [2022-01-10 07:15:11,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:15:11,263 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 73 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:11,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 1723 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 303 Invalid, 0 Unknown, 319 Unchecked, 0.3s Time] [2022-01-10 07:15:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-01-10 07:15:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2022-01-10 07:15:11,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 446 states have (on average 1.2757847533632287) internal successors, (569), 456 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 569 transitions. [2022-01-10 07:15:11,304 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 569 transitions. Word has length 59 [2022-01-10 07:15:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:11,304 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 569 transitions. [2022-01-10 07:15:11,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 569 transitions. [2022-01-10 07:15:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 07:15:11,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:11,307 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] [2022-01-10 07:15:11,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:15:11,517 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 07:15:11,518 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1334753695, now seen corresponding path program 1 times [2022-01-10 07:15:11,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:11,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874850005] [2022-01-10 07:15:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:11,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:11,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:11,520 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 07:15:11,521 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 07:15:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:11,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:15:11,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:11,885 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 07:15:11,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:11,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:11,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874850005] [2022-01-10 07:15:11,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874850005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:11,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:11,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:15:11,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788872195] [2022-01-10 07:15:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:11,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:15:11,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:11,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:15:11,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:15:11,887 INFO L87 Difference]: Start difference. First operand 457 states and 569 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:11,908 INFO L93 Difference]: Finished difference Result 577 states and 720 transitions. [2022-01-10 07:15:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:15:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 07:15:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:11,909 INFO L225 Difference]: With dead ends: 577 [2022-01-10 07:15:11,909 INFO L226 Difference]: Without dead ends: 404 [2022-01-10 07:15:11,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:15:11,911 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 23 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:11,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 987 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 240 Unchecked, 0.0s Time] [2022-01-10 07:15:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-10 07:15:11,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2022-01-10 07:15:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 393 states have (on average 1.2697201017811706) internal successors, (499), 403 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:11,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 499 transitions. [2022-01-10 07:15:11,921 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 499 transitions. Word has length 59 [2022-01-10 07:15:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:11,921 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 499 transitions. [2022-01-10 07:15:11,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 499 transitions. [2022-01-10 07:15:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 07:15:11,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:11,923 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] [2022-01-10 07:15:11,932 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 07:15:12,130 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 07:15:12,131 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash -491311835, now seen corresponding path program 1 times [2022-01-10 07:15:12,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501202928] [2022-01-10 07:15:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:12,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:12,133 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 07:15:12,134 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 07:15:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:12,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:15:12,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:12,554 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 07:15:12,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:12,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:12,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501202928] [2022-01-10 07:15:12,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501202928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:12,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:12,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:15:12,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891688794] [2022-01-10 07:15:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:12,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:15:12,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:15:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:15:12,556 INFO L87 Difference]: Start difference. First operand 404 states and 499 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:12,685 INFO L93 Difference]: Finished difference Result 532 states and 672 transitions. [2022-01-10 07:15:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:15:12,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 07:15:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:12,686 INFO L225 Difference]: With dead ends: 532 [2022-01-10 07:15:12,686 INFO L226 Difference]: Without dead ends: 253 [2022-01-10 07:15:12,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:15:12,688 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 20 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:12,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 667 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-01-10 07:15:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-01-10 07:15:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2022-01-10 07:15:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 242 states have (on average 1.3305785123966942) internal successors, (322), 252 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 322 transitions. [2022-01-10 07:15:12,693 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 322 transitions. Word has length 59 [2022-01-10 07:15:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:12,693 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 322 transitions. [2022-01-10 07:15:12,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:12,693 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 322 transitions. [2022-01-10 07:15:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 07:15:12,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:12,694 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] [2022-01-10 07:15:12,704 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 07:15:12,894 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 07:15:12,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1548943949, now seen corresponding path program 1 times [2022-01-10 07:15:12,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:12,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958718024] [2022-01-10 07:15:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:12,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:12,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:12,897 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 07:15:12,899 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 07:15:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:13,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:15:13,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:13,226 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 07:15:13,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:13,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958718024] [2022-01-10 07:15:13,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958718024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:13,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:13,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:15:13,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376224068] [2022-01-10 07:15:13,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:13,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:15:13,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:15:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:15:13,228 INFO L87 Difference]: Start difference. First operand 253 states and 322 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:13,446 INFO L93 Difference]: Finished difference Result 386 states and 501 transitions. [2022-01-10 07:15:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:15:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 07:15:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:13,448 INFO L225 Difference]: With dead ends: 386 [2022-01-10 07:15:13,448 INFO L226 Difference]: Without dead ends: 245 [2022-01-10 07:15:13,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:15:13,461 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 11 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:13,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 640 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 13 Unchecked, 0.2s Time] [2022-01-10 07:15:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-01-10 07:15:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-01-10 07:15:13,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3376068376068375) internal successors, (313), 244 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 313 transitions. [2022-01-10 07:15:13,465 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 313 transitions. Word has length 60 [2022-01-10 07:15:13,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:13,465 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 313 transitions. [2022-01-10 07:15:13,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 313 transitions. [2022-01-10 07:15:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 07:15:13,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:13,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:15:13,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 07:15:13,674 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 07:15:13,674 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash -944801897, now seen corresponding path program 1 times [2022-01-10 07:15:13,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:13,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810100394] [2022-01-10 07:15:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:13,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:13,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:13,681 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 07:15:13,683 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 07:15:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:13,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:13,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:14,381 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 07:15:14,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:14,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:14,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810100394] [2022-01-10 07:15:14,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810100394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:14,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:14,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:14,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773470713] [2022-01-10 07:15:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:14,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:14,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:14,383 INFO L87 Difference]: Start difference. First operand 245 states and 313 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:14,477 INFO L93 Difference]: Finished difference Result 313 states and 413 transitions. [2022-01-10 07:15:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:14,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 07:15:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:14,478 INFO L225 Difference]: With dead ends: 313 [2022-01-10 07:15:14,478 INFO L226 Difference]: Without dead ends: 247 [2022-01-10 07:15:14,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:14,479 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 50 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:14,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 587 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-01-10 07:15:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-01-10 07:15:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2022-01-10 07:15:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3333333333333333) internal successors, (312), 244 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 312 transitions. [2022-01-10 07:15:14,483 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 312 transitions. Word has length 61 [2022-01-10 07:15:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:14,483 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 312 transitions. [2022-01-10 07:15:14,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 312 transitions. [2022-01-10 07:15:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 07:15:14,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:14,484 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] [2022-01-10 07:15:14,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:15:14,691 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 07:15:14,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash 448084895, now seen corresponding path program 1 times [2022-01-10 07:15:14,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:14,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590192820] [2022-01-10 07:15:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:14,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:14,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:14,694 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 07:15:14,696 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 07:15:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:14,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:14,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:15,405 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 07:15:15,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:15,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:15,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590192820] [2022-01-10 07:15:15,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590192820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:15,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:15,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:15,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150961762] [2022-01-10 07:15:15,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:15,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:15,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:15,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:15,407 INFO L87 Difference]: Start difference. First operand 245 states and 312 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:15,512 INFO L93 Difference]: Finished difference Result 334 states and 439 transitions. [2022-01-10 07:15:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 07:15:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:15,513 INFO L225 Difference]: With dead ends: 334 [2022-01-10 07:15:15,514 INFO L226 Difference]: Without dead ends: 246 [2022-01-10 07:15:15,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:15,515 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 51 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:15,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 569 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-01-10 07:15:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-10 07:15:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2022-01-10 07:15:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.329059829059829) internal successors, (311), 244 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 311 transitions. [2022-01-10 07:15:15,521 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 311 transitions. Word has length 61 [2022-01-10 07:15:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:15,521 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 311 transitions. [2022-01-10 07:15:15,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 311 transitions. [2022-01-10 07:15:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 07:15:15,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:15,523 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] [2022-01-10 07:15:15,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 07:15:15,730 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 07:15:15,732 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1014019097, now seen corresponding path program 1 times [2022-01-10 07:15:15,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:15,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64709393] [2022-01-10 07:15:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:15,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:15,734 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 07:15:15,736 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 07:15:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:15,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:15:15,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:16,144 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 07:15:16,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:16,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:16,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64709393] [2022-01-10 07:15:16,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64709393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:16,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:16,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:15:16,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378920281] [2022-01-10 07:15:16,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:16,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:15:16,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:16,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:15:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:15:16,146 INFO L87 Difference]: Start difference. First operand 245 states and 311 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:16,258 INFO L93 Difference]: Finished difference Result 378 states and 490 transitions. [2022-01-10 07:15:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:15:16,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 07:15:16,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:16,261 INFO L225 Difference]: With dead ends: 378 [2022-01-10 07:15:16,261 INFO L226 Difference]: Without dead ends: 245 [2022-01-10 07:15:16,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:16,263 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 22 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:16,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 556 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-01-10 07:15:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-01-10 07:15:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-01-10 07:15:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3247863247863247) internal successors, (310), 244 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 310 transitions. [2022-01-10 07:15:16,280 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 310 transitions. Word has length 61 [2022-01-10 07:15:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:16,280 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 310 transitions. [2022-01-10 07:15:16,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:16,280 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 310 transitions. [2022-01-10 07:15:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 07:15:16,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:16,281 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] [2022-01-10 07:15:16,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:15:16,489 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 07:15:16,489 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash -471732578, now seen corresponding path program 1 times [2022-01-10 07:15:16,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:16,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835016003] [2022-01-10 07:15:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:16,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:16,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:16,492 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 07:15:16,493 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 07:15:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:16,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:16,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:17,185 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 07:15:17,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:17,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:17,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835016003] [2022-01-10 07:15:17,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835016003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:17,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:17,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:17,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413159040] [2022-01-10 07:15:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:17,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:17,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:17,186 INFO L87 Difference]: Start difference. First operand 245 states and 310 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:17,288 INFO L93 Difference]: Finished difference Result 264 states and 330 transitions. [2022-01-10 07:15:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 07:15:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:17,289 INFO L225 Difference]: With dead ends: 264 [2022-01-10 07:15:17,289 INFO L226 Difference]: Without dead ends: 247 [2022-01-10 07:15:17,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:17,290 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 35 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 428 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:17,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1333 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 428 Unchecked, 0.1s Time] [2022-01-10 07:15:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-01-10 07:15:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2022-01-10 07:15:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3205128205128205) internal successors, (309), 244 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 309 transitions. [2022-01-10 07:15:17,294 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 309 transitions. Word has length 63 [2022-01-10 07:15:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:17,294 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 309 transitions. [2022-01-10 07:15:17,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 309 transitions. [2022-01-10 07:15:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 07:15:17,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:17,295 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] [2022-01-10 07:15:17,315 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 07:15:17,503 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 07:15:17,503 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash -157878139, now seen corresponding path program 1 times [2022-01-10 07:15:17,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:17,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674395998] [2022-01-10 07:15:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:17,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:17,505 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 07:15:17,507 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 07:15:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:17,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:17,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:18,179 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 07:15:18,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:18,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:18,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674395998] [2022-01-10 07:15:18,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674395998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:18,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:18,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:18,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288552517] [2022-01-10 07:15:18,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:18,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:18,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:18,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:18,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:18,181 INFO L87 Difference]: Start difference. First operand 245 states and 309 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:18,269 INFO L93 Difference]: Finished difference Result 259 states and 325 transitions. [2022-01-10 07:15:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:18,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 07:15:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:18,270 INFO L225 Difference]: With dead ends: 259 [2022-01-10 07:15:18,270 INFO L226 Difference]: Without dead ends: 254 [2022-01-10 07:15:18,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:18,271 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 69 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:18,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 760 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 172 Unchecked, 0.1s Time] [2022-01-10 07:15:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-01-10 07:15:18,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 245. [2022-01-10 07:15:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.3162393162393162) internal successors, (308), 244 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 308 transitions. [2022-01-10 07:15:18,275 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 308 transitions. Word has length 63 [2022-01-10 07:15:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:18,275 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 308 transitions. [2022-01-10 07:15:18,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 308 transitions. [2022-01-10 07:15:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 07:15:18,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:18,276 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] [2022-01-10 07:15:18,283 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 07:15:18,483 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 07:15:18,483 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2011079223, now seen corresponding path program 1 times [2022-01-10 07:15:18,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:18,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945372446] [2022-01-10 07:15:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:18,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:18,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:18,485 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 07:15:18,487 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 07:15:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:18,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:18,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:19,137 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 07:15:19,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:19,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:19,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945372446] [2022-01-10 07:15:19,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945372446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:19,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:19,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:19,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763450106] [2022-01-10 07:15:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:19,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:19,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:19,138 INFO L87 Difference]: Start difference. First operand 245 states and 308 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:19,148 INFO L93 Difference]: Finished difference Result 339 states and 439 transitions. [2022-01-10 07:15:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:15:19,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 07:15:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:19,149 INFO L225 Difference]: With dead ends: 339 [2022-01-10 07:15:19,150 INFO L226 Difference]: Without dead ends: 245 [2022-01-10 07:15:19,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:19,150 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 33 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:19,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 892 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 224 Unchecked, 0.0s Time] [2022-01-10 07:15:19,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-01-10 07:15:19,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-01-10 07:15:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.311965811965812) internal successors, (307), 244 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 307 transitions. [2022-01-10 07:15:19,154 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 307 transitions. Word has length 63 [2022-01-10 07:15:19,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:19,154 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 307 transitions. [2022-01-10 07:15:19,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 307 transitions. [2022-01-10 07:15:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 07:15:19,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:19,155 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] [2022-01-10 07:15:19,169 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 07:15:19,362 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 07:15:19,362 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash 556986468, now seen corresponding path program 1 times [2022-01-10 07:15:19,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:19,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411106772] [2022-01-10 07:15:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:19,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:19,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:19,364 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 07:15:19,374 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 07:15:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:19,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:19,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:20,003 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 07:15:20,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:20,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:20,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411106772] [2022-01-10 07:15:20,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411106772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:20,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:20,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:20,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751498925] [2022-01-10 07:15:20,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:20,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:20,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:20,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:20,005 INFO L87 Difference]: Start difference. First operand 245 states and 307 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:20,135 INFO L93 Difference]: Finished difference Result 320 states and 415 transitions. [2022-01-10 07:15:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 07:15:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:20,136 INFO L225 Difference]: With dead ends: 320 [2022-01-10 07:15:20,136 INFO L226 Difference]: Without dead ends: 249 [2022-01-10 07:15:20,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:20,137 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 32 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:20,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 1181 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 320 Unchecked, 0.1s Time] [2022-01-10 07:15:20,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-10 07:15:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-01-10 07:15:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.3067226890756303) internal successors, (311), 248 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 311 transitions. [2022-01-10 07:15:20,141 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 311 transitions. Word has length 63 [2022-01-10 07:15:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:20,141 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 311 transitions. [2022-01-10 07:15:20,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 311 transitions. [2022-01-10 07:15:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 07:15:20,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:20,142 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] [2022-01-10 07:15:20,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 07:15:20,348 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 07:15:20,348 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -33472501, now seen corresponding path program 1 times [2022-01-10 07:15:20,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:20,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456442958] [2022-01-10 07:15:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:20,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:20,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:20,350 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 07:15:20,352 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 07:15:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:20,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:20,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:21,057 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 07:15:21,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:21,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:21,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456442958] [2022-01-10 07:15:21,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456442958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:21,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:21,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:21,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590353849] [2022-01-10 07:15:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:21,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:21,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:21,059 INFO L87 Difference]: Start difference. First operand 249 states and 311 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:21,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:21,226 INFO L93 Difference]: Finished difference Result 309 states and 401 transitions. [2022-01-10 07:15:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:21,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 07:15:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:21,227 INFO L225 Difference]: With dead ends: 309 [2022-01-10 07:15:21,227 INFO L226 Difference]: Without dead ends: 250 [2022-01-10 07:15:21,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:21,228 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 34 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:21,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1172 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 309 Unchecked, 0.1s Time] [2022-01-10 07:15:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-10 07:15:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2022-01-10 07:15:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.3025210084033614) internal successors, (310), 248 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 310 transitions. [2022-01-10 07:15:21,232 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 310 transitions. Word has length 63 [2022-01-10 07:15:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:21,232 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 310 transitions. [2022-01-10 07:15:21,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 310 transitions. [2022-01-10 07:15:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 07:15:21,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:21,232 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] [2022-01-10 07:15:21,239 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 07:15:21,439 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 07:15:21,439 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:21,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:21,440 INFO L85 PathProgramCache]: Analyzing trace with hash -653212004, now seen corresponding path program 1 times [2022-01-10 07:15:21,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:21,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83868676] [2022-01-10 07:15:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:21,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:21,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:21,441 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 07:15:21,443 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 07:15:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:21,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:21,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:22,104 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 07:15:22,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:22,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:22,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83868676] [2022-01-10 07:15:22,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83868676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:22,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:22,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:22,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017604614] [2022-01-10 07:15:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:22,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:22,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:22,105 INFO L87 Difference]: Start difference. First operand 249 states and 310 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:22,222 INFO L93 Difference]: Finished difference Result 254 states and 314 transitions. [2022-01-10 07:15:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:22,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 07:15:22,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:22,224 INFO L225 Difference]: With dead ends: 254 [2022-01-10 07:15:22,224 INFO L226 Difference]: Without dead ends: 249 [2022-01-10 07:15:22,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:22,225 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 42 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:22,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 877 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 129 Unchecked, 0.1s Time] [2022-01-10 07:15:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-10 07:15:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-01-10 07:15:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.2983193277310925) internal successors, (309), 248 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 309 transitions. [2022-01-10 07:15:22,229 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 309 transitions. Word has length 63 [2022-01-10 07:15:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:22,229 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 309 transitions. [2022-01-10 07:15:22,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 309 transitions. [2022-01-10 07:15:22,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 07:15:22,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:22,229 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] [2022-01-10 07:15:22,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 07:15:22,430 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 07:15:22,430 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:22,430 INFO L85 PathProgramCache]: Analyzing trace with hash 543767036, now seen corresponding path program 1 times [2022-01-10 07:15:22,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:22,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920311049] [2022-01-10 07:15:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:22,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:22,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:22,432 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 07:15:22,434 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 07:15:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:22,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:22,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:23,091 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 07:15:23,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:23,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:23,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920311049] [2022-01-10 07:15:23,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920311049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:23,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:23,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:23,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784157428] [2022-01-10 07:15:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:23,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:23,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:23,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:23,093 INFO L87 Difference]: Start difference. First operand 249 states and 309 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:23,225 INFO L93 Difference]: Finished difference Result 305 states and 395 transitions. [2022-01-10 07:15:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:23,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 07:15:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:23,226 INFO L225 Difference]: With dead ends: 305 [2022-01-10 07:15:23,226 INFO L226 Difference]: Without dead ends: 249 [2022-01-10 07:15:23,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:23,227 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 43 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:23,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 876 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-01-10 07:15:23,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-10 07:15:23,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-01-10 07:15:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.2941176470588236) internal successors, (308), 248 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 308 transitions. [2022-01-10 07:15:23,232 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 308 transitions. Word has length 63 [2022-01-10 07:15:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:23,232 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 308 transitions. [2022-01-10 07:15:23,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 308 transitions. [2022-01-10 07:15:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 07:15:23,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:23,232 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] [2022-01-10 07:15:23,253 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 07:15:23,441 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 07:15:23,442 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:23,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -56004428, now seen corresponding path program 1 times [2022-01-10 07:15:23,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:23,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373716168] [2022-01-10 07:15:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:23,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:23,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:23,444 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 07:15:23,445 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 07:15:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:23,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:23,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:24,175 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 07:15:24,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:24,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:24,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373716168] [2022-01-10 07:15:24,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373716168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:24,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:24,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:24,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220770335] [2022-01-10 07:15:24,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:24,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:24,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:24,176 INFO L87 Difference]: Start difference. First operand 249 states and 308 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:24,245 INFO L93 Difference]: Finished difference Result 320 states and 411 transitions. [2022-01-10 07:15:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:24,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 07:15:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:24,246 INFO L225 Difference]: With dead ends: 320 [2022-01-10 07:15:24,246 INFO L226 Difference]: Without dead ends: 249 [2022-01-10 07:15:24,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:24,247 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 48 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:24,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 578 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-01-10 07:15:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-10 07:15:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 245. [2022-01-10 07:15:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.294871794871795) internal successors, (303), 244 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 303 transitions. [2022-01-10 07:15:24,251 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 303 transitions. Word has length 64 [2022-01-10 07:15:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:24,263 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 303 transitions. [2022-01-10 07:15:24,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 303 transitions. [2022-01-10 07:15:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:15:24,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:24,264 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] [2022-01-10 07:15:24,279 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 07:15:24,481 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 07:15:24,481 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2022048839, now seen corresponding path program 1 times [2022-01-10 07:15:24,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:24,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125668641] [2022-01-10 07:15:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:24,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:24,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:24,483 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 07:15:24,484 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 07:15:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:24,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:15:24,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:25,385 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 07:15:25,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:25,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:25,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125668641] [2022-01-10 07:15:25,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125668641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:25,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:25,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:15:25,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115019901] [2022-01-10 07:15:25,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:25,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:15:25,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:15:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:25,386 INFO L87 Difference]: Start difference. First operand 245 states and 303 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:25,422 INFO L93 Difference]: Finished difference Result 299 states and 387 transitions. [2022-01-10 07:15:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:15:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 07:15:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:25,423 INFO L225 Difference]: With dead ends: 299 [2022-01-10 07:15:25,424 INFO L226 Difference]: Without dead ends: 212 [2022-01-10 07:15:25,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:15:25,424 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 31 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:25,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1367 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 113 Unchecked, 0.0s Time] [2022-01-10 07:15:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-10 07:15:25,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-01-10 07:15:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 204 states have (on average 1.2990196078431373) internal successors, (265), 211 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 265 transitions. [2022-01-10 07:15:25,428 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 265 transitions. Word has length 65 [2022-01-10 07:15:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:25,428 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 265 transitions. [2022-01-10 07:15:25,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 265 transitions. [2022-01-10 07:15:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:15:25,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:25,428 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] [2022-01-10 07:15:25,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:15:25,635 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 07:15:25,636 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash -907607662, now seen corresponding path program 1 times [2022-01-10 07:15:25,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:25,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637982809] [2022-01-10 07:15:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:25,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:25,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:25,637 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 07:15:25,639 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 07:15:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:25,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-10 07:15:25,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:15:28,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:28,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:28,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637982809] [2022-01-10 07:15:28,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637982809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:28,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:28,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-10 07:15:28,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027105495] [2022-01-10 07:15:28,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:28,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 07:15:28,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 07:15:28,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-01-10 07:15:28,553 INFO L87 Difference]: Start difference. First operand 212 states and 265 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:28,778 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2022-01-10 07:15:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 07:15:28,778 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 07:15:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:28,779 INFO L225 Difference]: With dead ends: 293 [2022-01-10 07:15:28,779 INFO L226 Difference]: Without dead ends: 223 [2022-01-10 07:15:28,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-01-10 07:15:28,780 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 42 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 818 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:28,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 2474 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 227 Invalid, 0 Unknown, 818 Unchecked, 0.2s Time] [2022-01-10 07:15:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-01-10 07:15:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-01-10 07:15:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 215 states have (on average 1.2976744186046512) internal successors, (279), 222 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 279 transitions. [2022-01-10 07:15:28,784 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 279 transitions. Word has length 65 [2022-01-10 07:15:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:28,784 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 279 transitions. [2022-01-10 07:15:28,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 279 transitions. [2022-01-10 07:15:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:15:28,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:28,785 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] [2022-01-10 07:15:28,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 07:15:28,992 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 07:15:28,993 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1360022849, now seen corresponding path program 1 times [2022-01-10 07:15:28,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:28,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371881125] [2022-01-10 07:15:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:28,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:28,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:28,994 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 07:15:28,995 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 07:15:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:29,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 07:15:29,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:30,092 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 07:15:30,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:30,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:30,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371881125] [2022-01-10 07:15:30,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371881125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:30,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:30,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 07:15:30,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106106898] [2022-01-10 07:15:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:30,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:15:30,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:15:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:15:30,094 INFO L87 Difference]: Start difference. First operand 223 states and 279 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:30,165 INFO L93 Difference]: Finished difference Result 277 states and 363 transitions. [2022-01-10 07:15:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:15:30,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 07:15:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:30,166 INFO L225 Difference]: With dead ends: 277 [2022-01-10 07:15:30,166 INFO L226 Difference]: Without dead ends: 160 [2022-01-10 07:15:30,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:15:30,167 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 63 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:30,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 555 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 84 Unchecked, 0.0s Time] [2022-01-10 07:15:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-10 07:15:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-01-10 07:15:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.294871794871795) internal successors, (202), 159 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 202 transitions. [2022-01-10 07:15:30,171 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 202 transitions. Word has length 65 [2022-01-10 07:15:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:30,171 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 202 transitions. [2022-01-10 07:15:30,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 202 transitions. [2022-01-10 07:15:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:15:30,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:30,171 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] [2022-01-10 07:15:30,180 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 07:15:30,378 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 07:15:30,379 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:30,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:30,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1869823065, now seen corresponding path program 1 times [2022-01-10 07:15:30,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:30,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848594016] [2022-01-10 07:15:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:30,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:30,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:30,381 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 07:15:30,384 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 07:15:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:30,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 07:15:30,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:31,892 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 07:15:31,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:31,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:31,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848594016] [2022-01-10 07:15:31,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848594016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:31,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:31,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 07:15:31,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350493347] [2022-01-10 07:15:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:31,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 07:15:31,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 07:15:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:15:31,894 INFO L87 Difference]: Start difference. First operand 160 states and 202 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:31,950 INFO L93 Difference]: Finished difference Result 214 states and 286 transitions. [2022-01-10 07:15:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:15:31,951 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 07:15:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:31,951 INFO L225 Difference]: With dead ends: 214 [2022-01-10 07:15:31,951 INFO L226 Difference]: Without dead ends: 144 [2022-01-10 07:15:31,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-10 07:15:31,952 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 46 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:31,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1005 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 207 Unchecked, 0.0s Time] [2022-01-10 07:15:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-01-10 07:15:31,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2022-01-10 07:15:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.2900763358778626) internal successors, (169), 132 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 169 transitions. [2022-01-10 07:15:31,955 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 169 transitions. Word has length 66 [2022-01-10 07:15:31,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:31,956 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 169 transitions. [2022-01-10 07:15:31,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 169 transitions. [2022-01-10 07:15:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:15:31,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:31,956 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] [2022-01-10 07:15:31,963 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 07:15:32,163 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 07:15:32,163 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:32,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:32,164 INFO L85 PathProgramCache]: Analyzing trace with hash 476193166, now seen corresponding path program 1 times [2022-01-10 07:15:32,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:32,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006181882] [2022-01-10 07:15:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:32,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:32,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:32,165 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 07:15:32,169 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 07:15:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:32,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:32,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:32,855 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 07:15:32,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:32,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:32,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006181882] [2022-01-10 07:15:32,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006181882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:32,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:32,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:32,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786778819] [2022-01-10 07:15:32,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:32,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:32,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:32,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:32,856 INFO L87 Difference]: Start difference. First operand 133 states and 169 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:32,903 INFO L93 Difference]: Finished difference Result 205 states and 273 transitions. [2022-01-10 07:15:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:32,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 07:15:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:32,904 INFO L225 Difference]: With dead ends: 205 [2022-01-10 07:15:32,904 INFO L226 Difference]: Without dead ends: 133 [2022-01-10 07:15:32,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:32,905 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 44 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:32,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 497 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 114 Unchecked, 0.0s Time] [2022-01-10 07:15:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-10 07:15:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-01-10 07:15:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.282442748091603) internal successors, (168), 132 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 168 transitions. [2022-01-10 07:15:32,908 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 168 transitions. Word has length 66 [2022-01-10 07:15:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:32,908 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 168 transitions. [2022-01-10 07:15:32,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 168 transitions. [2022-01-10 07:15:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:15:32,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:32,909 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] [2022-01-10 07:15:32,916 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 07:15:33,109 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 07:15:33,109 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash 989039241, now seen corresponding path program 1 times [2022-01-10 07:15:33,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:33,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432340233] [2022-01-10 07:15:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:33,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:33,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:33,111 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 07:15:33,112 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 07:15:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:33,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-10 07:15:33,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:38,870 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 07:15:38,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:38,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432340233] [2022-01-10 07:15:38,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432340233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:38,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:38,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-10 07:15:38,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18374290] [2022-01-10 07:15:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:38,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 07:15:38,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 07:15:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-01-10 07:15:38,872 INFO L87 Difference]: Start difference. First operand 133 states and 168 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:39,106 INFO L93 Difference]: Finished difference Result 155 states and 194 transitions. [2022-01-10 07:15:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 07:15:39,107 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:15:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:39,107 INFO L225 Difference]: With dead ends: 155 [2022-01-10 07:15:39,107 INFO L226 Difference]: Without dead ends: 149 [2022-01-10 07:15:39,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-01-10 07:15:39,108 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 67 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 362 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:39,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1365 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 362 Unchecked, 0.1s Time] [2022-01-10 07:15:39,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-10 07:15:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-01-10 07:15:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 147 states have (on average 1.2789115646258504) internal successors, (188), 148 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 188 transitions. [2022-01-10 07:15:39,112 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 188 transitions. Word has length 68 [2022-01-10 07:15:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:39,112 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 188 transitions. [2022-01-10 07:15:39,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 188 transitions. [2022-01-10 07:15:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:15:39,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:39,113 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] [2022-01-10 07:15:39,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 07:15:39,313 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 07:15:39,314 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash 882869858, now seen corresponding path program 1 times [2022-01-10 07:15:39,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:39,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479608500] [2022-01-10 07:15:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:39,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:39,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:39,316 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 07:15:39,316 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 07:15:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:39,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:15:39,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:40,212 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 07:15:40,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:40,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:40,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479608500] [2022-01-10 07:15:40,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479608500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:40,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:40,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:15:40,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770745209] [2022-01-10 07:15:40,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:40,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:15:40,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:15:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:40,214 INFO L87 Difference]: Start difference. First operand 149 states and 188 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:40,255 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2022-01-10 07:15:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:15:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:15:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:40,256 INFO L225 Difference]: With dead ends: 149 [2022-01-10 07:15:40,257 INFO L226 Difference]: Without dead ends: 143 [2022-01-10 07:15:40,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:15:40,257 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 34 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:40,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 891 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 87 Unchecked, 0.0s Time] [2022-01-10 07:15:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-01-10 07:15:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2022-01-10 07:15:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2857142857142858) internal successors, (162), 126 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 162 transitions. [2022-01-10 07:15:40,261 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 162 transitions. Word has length 69 [2022-01-10 07:15:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:40,261 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 162 transitions. [2022-01-10 07:15:40,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2022-01-10 07:15:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 07:15:40,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:40,261 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] [2022-01-10 07:15:40,269 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 07:15:40,468 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 07:15:40,469 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:40,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash 262304865, now seen corresponding path program 1 times [2022-01-10 07:15:40,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:40,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486655247] [2022-01-10 07:15:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:40,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:40,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:40,471 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 07:15:40,473 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 07:15:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:40,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:40,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:41,206 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 07:15:41,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:41,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:41,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486655247] [2022-01-10 07:15:41,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486655247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:41,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:41,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:41,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5014689] [2022-01-10 07:15:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:41,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:41,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:41,208 INFO L87 Difference]: Start difference. First operand 127 states and 162 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:41,271 INFO L93 Difference]: Finished difference Result 191 states and 257 transitions. [2022-01-10 07:15:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-10 07:15:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:41,272 INFO L225 Difference]: With dead ends: 191 [2022-01-10 07:15:41,272 INFO L226 Difference]: Without dead ends: 131 [2022-01-10 07:15:41,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:41,272 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 33 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:41,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 533 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 110 Unchecked, 0.0s Time] [2022-01-10 07:15:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-01-10 07:15:41,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-01-10 07:15:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2769230769230768) internal successors, (166), 130 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 166 transitions. [2022-01-10 07:15:41,276 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 166 transitions. Word has length 91 [2022-01-10 07:15:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:41,276 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 166 transitions. [2022-01-10 07:15:41,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 166 transitions. [2022-01-10 07:15:41,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 07:15:41,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:41,277 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] [2022-01-10 07:15:41,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:15:41,477 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 07:15:41,478 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1079868499, now seen corresponding path program 1 times [2022-01-10 07:15:41,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:41,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680432881] [2022-01-10 07:15:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:41,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:41,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:41,487 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 07:15:41,488 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 07:15:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:41,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:41,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:42,350 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 07:15:42,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:42,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:42,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680432881] [2022-01-10 07:15:42,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680432881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:42,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:42,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:42,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465563977] [2022-01-10 07:15:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:42,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:42,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:42,351 INFO L87 Difference]: Start difference. First operand 131 states and 166 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:42,361 INFO L93 Difference]: Finished difference Result 191 states and 256 transitions. [2022-01-10 07:15:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:15:42,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-01-10 07:15:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:42,362 INFO L225 Difference]: With dead ends: 191 [2022-01-10 07:15:42,362 INFO L226 Difference]: Without dead ends: 131 [2022-01-10 07:15:42,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:42,363 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 34 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:42,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 492 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 107 Unchecked, 0.0s Time] [2022-01-10 07:15:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-01-10 07:15:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2022-01-10 07:15:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 126 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 161 transitions. [2022-01-10 07:15:42,367 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 161 transitions. Word has length 92 [2022-01-10 07:15:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:42,367 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 161 transitions. [2022-01-10 07:15:42,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 161 transitions. [2022-01-10 07:15:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 07:15:42,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:42,368 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] [2022-01-10 07:15:42,388 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 07:15:42,568 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 07:15:42,569 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:42,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1239207292, now seen corresponding path program 1 times [2022-01-10 07:15:42,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:42,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854787772] [2022-01-10 07:15:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:42,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:42,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:42,571 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 07:15:42,571 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 07:15:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:42,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:15:42,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:42,827 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 07:15:42,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:42,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:42,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854787772] [2022-01-10 07:15:42,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854787772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:42,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:42,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:15:42,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319833779] [2022-01-10 07:15:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:42,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:15:42,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:15:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:15:42,829 INFO L87 Difference]: Start difference. First operand 127 states and 161 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:42,845 INFO L93 Difference]: Finished difference Result 227 states and 316 transitions. [2022-01-10 07:15:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:15:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-10 07:15:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:42,846 INFO L225 Difference]: With dead ends: 227 [2022-01-10 07:15:42,846 INFO L226 Difference]: Without dead ends: 173 [2022-01-10 07:15:42,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:15:42,846 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 93 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:42,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 314 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:15:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-10 07:15:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2022-01-10 07:15:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3529411764705883) internal successors, (230), 170 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2022-01-10 07:15:42,851 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 93 [2022-01-10 07:15:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:42,851 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2022-01-10 07:15:42,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2022-01-10 07:15:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 07:15:42,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:42,852 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] [2022-01-10 07:15:42,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:15:43,052 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 07:15:43,052 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:43,053 INFO L85 PathProgramCache]: Analyzing trace with hash -442659019, now seen corresponding path program 1 times [2022-01-10 07:15:43,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:43,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36241882] [2022-01-10 07:15:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:43,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:43,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:43,067 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 07:15:43,068 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 07:15:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:43,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:15:43,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:43,325 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 07:15:43,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:43,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:43,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36241882] [2022-01-10 07:15:43,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36241882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:43,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:43,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:15:43,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114489227] [2022-01-10 07:15:43,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:43,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:15:43,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:15:43,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:15:43,330 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:43,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:43,360 INFO L93 Difference]: Finished difference Result 351 states and 510 transitions. [2022-01-10 07:15:43,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:15:43,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-10 07:15:43,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:43,362 INFO L225 Difference]: With dead ends: 351 [2022-01-10 07:15:43,362 INFO L226 Difference]: Without dead ends: 253 [2022-01-10 07:15:43,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 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 07:15:43,372 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 85 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:43,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 314 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:15:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-01-10 07:15:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2022-01-10 07:15:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.416) internal successors, (354), 250 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 354 transitions. [2022-01-10 07:15:43,383 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 354 transitions. Word has length 94 [2022-01-10 07:15:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:43,384 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 354 transitions. [2022-01-10 07:15:43,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 354 transitions. [2022-01-10 07:15:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 07:15:43,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:43,387 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] [2022-01-10 07:15:43,396 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 07:15:43,587 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 07:15:43,587 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash 566728688, now seen corresponding path program 1 times [2022-01-10 07:15:43,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:43,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265545379] [2022-01-10 07:15:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:43,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:43,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:43,590 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 07:15:43,592 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 07:15:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:43,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:15:43,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:43,813 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 07:15:43,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:43,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:43,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265545379] [2022-01-10 07:15:43,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265545379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:43,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:43,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:15:43,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913785985] [2022-01-10 07:15:43,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:43,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:15:43,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:15:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:15:43,818 INFO L87 Difference]: Start difference. First operand 251 states and 354 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:43,845 INFO L93 Difference]: Finished difference Result 575 states and 856 transitions. [2022-01-10 07:15:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:15:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 07:15:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:43,846 INFO L225 Difference]: With dead ends: 575 [2022-01-10 07:15:43,847 INFO L226 Difference]: Without dead ends: 397 [2022-01-10 07:15:43,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 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 07:15:43,847 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 77 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:43,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 314 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:15:43,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-01-10 07:15:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 395. [2022-01-10 07:15:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.4568527918781726) internal successors, (574), 394 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 574 transitions. [2022-01-10 07:15:43,855 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 574 transitions. Word has length 95 [2022-01-10 07:15:43,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:43,855 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 574 transitions. [2022-01-10 07:15:43,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 574 transitions. [2022-01-10 07:15:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 07:15:43,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:43,855 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] [2022-01-10 07:15:43,884 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 07:15:44,062 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 07:15:44,063 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 48808937, now seen corresponding path program 1 times [2022-01-10 07:15:44,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:44,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276125038] [2022-01-10 07:15:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:44,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:44,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:44,065 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 07:15:44,066 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 07:15:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:44,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:15:44,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:44,930 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 07:15:44,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:44,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:44,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276125038] [2022-01-10 07:15:44,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276125038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:44,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:44,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:15:44,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898421847] [2022-01-10 07:15:44,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:44,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:15:44,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:44,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:15:44,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:15:44,932 INFO L87 Difference]: Start difference. First operand 395 states and 574 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:45,038 INFO L93 Difference]: Finished difference Result 2005 states and 3059 transitions. [2022-01-10 07:15:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:15:45,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-01-10 07:15:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:45,043 INFO L225 Difference]: With dead ends: 2005 [2022-01-10 07:15:45,043 INFO L226 Difference]: Without dead ends: 1683 [2022-01-10 07:15:45,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:15:45,044 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 821 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:45,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 467 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:15:45,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-01-10 07:15:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1035. [2022-01-10 07:15:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.4912959381044488) internal successors, (1542), 1034 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1542 transitions. [2022-01-10 07:15:45,075 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1542 transitions. Word has length 96 [2022-01-10 07:15:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:45,075 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1542 transitions. [2022-01-10 07:15:45,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1542 transitions. [2022-01-10 07:15:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:15:45,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:45,076 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] [2022-01-10 07:15:45,083 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 07:15:45,283 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 07:15:45,284 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:45,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1560996633, now seen corresponding path program 1 times [2022-01-10 07:15:45,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:45,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517672445] [2022-01-10 07:15:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:45,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:45,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:45,286 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 07:15:45,288 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 07:15:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:45,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:15:45,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:45,643 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 07:15:45,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:45,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:45,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517672445] [2022-01-10 07:15:45,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517672445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:45,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:45,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:15:45,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130464851] [2022-01-10 07:15:45,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:45,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:15:45,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:45,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:15:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:15:45,645 INFO L87 Difference]: Start difference. First operand 1035 states and 1542 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:45,694 INFO L93 Difference]: Finished difference Result 2026 states and 3047 transitions. [2022-01-10 07:15:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:15:45,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-10 07:15:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:45,697 INFO L225 Difference]: With dead ends: 2026 [2022-01-10 07:15:45,698 INFO L226 Difference]: Without dead ends: 1064 [2022-01-10 07:15:45,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:15:45,703 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 21 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:45,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 376 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2022-01-10 07:15:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-10 07:15:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1063. [2022-01-10 07:15:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 1.4868173258003767) internal successors, (1579), 1062 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1579 transitions. [2022-01-10 07:15:45,729 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1579 transitions. Word has length 98 [2022-01-10 07:15:45,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:45,729 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 1579 transitions. [2022-01-10 07:15:45,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1579 transitions. [2022-01-10 07:15:45,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:15:45,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:45,730 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] [2022-01-10 07:15:45,738 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 07:15:45,937 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 07:15:45,938 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:45,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1532730576, now seen corresponding path program 1 times [2022-01-10 07:15:45,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:45,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813004834] [2022-01-10 07:15:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:45,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:45,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:45,940 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 07:15:45,941 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 07:15:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:46,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:15:46,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:46,185 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 07:15:46,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:46,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:46,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813004834] [2022-01-10 07:15:46,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813004834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:46,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:46,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:15:46,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494274560] [2022-01-10 07:15:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:46,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:15:46,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:15:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:15:46,186 INFO L87 Difference]: Start difference. First operand 1063 states and 1579 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:46,270 INFO L93 Difference]: Finished difference Result 2182 states and 3224 transitions. [2022-01-10 07:15:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:15:46,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 07:15:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:46,276 INFO L225 Difference]: With dead ends: 2182 [2022-01-10 07:15:46,276 INFO L226 Difference]: Without dead ends: 2180 [2022-01-10 07:15:46,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:46,277 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 267 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:46,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 652 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:15:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2022-01-10 07:15:46,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1135. [2022-01-10 07:15:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 1.4559082892416226) internal successors, (1651), 1134 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1651 transitions. [2022-01-10 07:15:46,319 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1651 transitions. Word has length 99 [2022-01-10 07:15:46,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:46,320 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1651 transitions. [2022-01-10 07:15:46,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:46,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1651 transitions. [2022-01-10 07:15:46,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:15:46,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:46,321 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] [2022-01-10 07:15:46,342 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 07:15:46,528 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 07:15:46,529 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:46,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash -875005782, now seen corresponding path program 1 times [2022-01-10 07:15:46,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:46,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156340121] [2022-01-10 07:15:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:46,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:46,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:46,531 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 07:15:46,532 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 07:15:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:46,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:15:46,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:46,754 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 07:15:46,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:46,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:46,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156340121] [2022-01-10 07:15:46,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156340121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:46,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:46,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:15:46,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134796181] [2022-01-10 07:15:46,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:46,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:15:46,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:46,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:15:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:15:46,756 INFO L87 Difference]: Start difference. First operand 1135 states and 1651 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:46,808 INFO L93 Difference]: Finished difference Result 2963 states and 4341 transitions. [2022-01-10 07:15:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:15:46,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 07:15:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:46,813 INFO L225 Difference]: With dead ends: 2963 [2022-01-10 07:15:46,813 INFO L226 Difference]: Without dead ends: 1929 [2022-01-10 07:15:46,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 07:15:46,814 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 98 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:46,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 322 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:15:46,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2022-01-10 07:15:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1927. [2022-01-10 07:15:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 1.442367601246106) internal successors, (2778), 1926 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2778 transitions. [2022-01-10 07:15:46,869 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2778 transitions. Word has length 99 [2022-01-10 07:15:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:46,869 INFO L470 AbstractCegarLoop]: Abstraction has 1927 states and 2778 transitions. [2022-01-10 07:15:46,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2778 transitions. [2022-01-10 07:15:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 07:15:46,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:46,870 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] [2022-01-10 07:15:46,885 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 07:15:47,077 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 07:15:47,077 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash -250794056, now seen corresponding path program 1 times [2022-01-10 07:15:47,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:47,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997891280] [2022-01-10 07:15:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:47,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:47,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:47,080 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 07:15:47,133 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 07:15:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:47,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:15:47,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:47,535 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 07:15:47,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:47,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:47,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997891280] [2022-01-10 07:15:47,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997891280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:47,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:47,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:15:47,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469307716] [2022-01-10 07:15:47,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:47,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:15:47,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:15:47,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:15:47,537 INFO L87 Difference]: Start difference. First operand 1927 states and 2778 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:47,593 INFO L93 Difference]: Finished difference Result 3755 states and 5446 transitions. [2022-01-10 07:15:47,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:15:47,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 07:15:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:47,599 INFO L225 Difference]: With dead ends: 3755 [2022-01-10 07:15:47,599 INFO L226 Difference]: Without dead ends: 1929 [2022-01-10 07:15:47,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:15:47,605 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 20 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:47,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 377 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2022-01-10 07:15:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2022-01-10 07:15:47,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1929. [2022-01-10 07:15:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.441908713692946) internal successors, (2780), 1928 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2780 transitions. [2022-01-10 07:15:47,665 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2780 transitions. Word has length 100 [2022-01-10 07:15:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:47,665 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 2780 transitions. [2022-01-10 07:15:47,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2780 transitions. [2022-01-10 07:15:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 07:15:47,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:47,666 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 07:15:47,683 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 07:15:47,874 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 07:15:47,874 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:47,874 INFO L85 PathProgramCache]: Analyzing trace with hash -941514047, now seen corresponding path program 1 times [2022-01-10 07:15:47,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:47,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680183206] [2022-01-10 07:15:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:47,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:47,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:47,876 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 07:15:47,876 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 07:15:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:48,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:15:48,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:15:48,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:48,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:48,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680183206] [2022-01-10 07:15:48,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680183206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:48,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:48,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:15:48,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461481687] [2022-01-10 07:15:48,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:48,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:15:48,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:15:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:15:48,221 INFO L87 Difference]: Start difference. First operand 1929 states and 2780 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:48,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:48,298 INFO L93 Difference]: Finished difference Result 3757 states and 5446 transitions. [2022-01-10 07:15:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:15:48,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 07:15:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:48,303 INFO L225 Difference]: With dead ends: 3757 [2022-01-10 07:15:48,303 INFO L226 Difference]: Without dead ends: 1931 [2022-01-10 07:15:48,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 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 07:15:48,306 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 71 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:48,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 314 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:15:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2022-01-10 07:15:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1929. [2022-01-10 07:15:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.429460580912863) internal successors, (2756), 1928 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2756 transitions. [2022-01-10 07:15:48,364 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2756 transitions. Word has length 124 [2022-01-10 07:15:48,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:48,364 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 2756 transitions. [2022-01-10 07:15:48,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:48,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2756 transitions. [2022-01-10 07:15:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 07:15:48,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:48,365 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-01-10 07:15:48,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 07:15:48,569 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 07:15:48,569 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:48,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash -307568307, now seen corresponding path program 1 times [2022-01-10 07:15:48,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:48,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212777051] [2022-01-10 07:15:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:48,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:48,571 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 07:15:48,572 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 07:15:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:48,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:15:48,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 07:15:49,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:49,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212777051] [2022-01-10 07:15:49,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212777051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:49,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:15:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228327740] [2022-01-10 07:15:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:49,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:15:49,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:15:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:15:49,039 INFO L87 Difference]: Start difference. First operand 1929 states and 2756 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:49,111 INFO L93 Difference]: Finished difference Result 3761 states and 5404 transitions. [2022-01-10 07:15:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:15:49,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 07:15:49,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:49,116 INFO L225 Difference]: With dead ends: 3761 [2022-01-10 07:15:49,116 INFO L226 Difference]: Without dead ends: 1935 [2022-01-10 07:15:49,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:15:49,118 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 20 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:49,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 376 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2022-01-10 07:15:49,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2022-01-10 07:15:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1935. [2022-01-10 07:15:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 1.4281282316442605) internal successors, (2762), 1934 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2762 transitions. [2022-01-10 07:15:49,170 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2762 transitions. Word has length 125 [2022-01-10 07:15:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:49,171 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 2762 transitions. [2022-01-10 07:15:49,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2762 transitions. [2022-01-10 07:15:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 07:15:49,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:49,172 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-01-10 07:15:49,181 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 07:15:49,379 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 07:15:49,379 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash -167019697, now seen corresponding path program 1 times [2022-01-10 07:15:49,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:49,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144211840] [2022-01-10 07:15:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:49,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:49,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:49,381 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 07:15:49,383 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 07:15:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:49,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 07:15:49,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:15:50,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:15:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:15:51,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:51,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144211840] [2022-01-10 07:15:51,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144211840] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:15:51,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:15:51,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-01-10 07:15:51,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4652499] [2022-01-10 07:15:51,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:15:51,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 07:15:51,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 07:15:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-01-10 07:15:51,327 INFO L87 Difference]: Start difference. First operand 1935 states and 2762 transitions. Second operand has 24 states, 24 states have (on average 9.5) internal successors, (228), 23 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:51,560 INFO L93 Difference]: Finished difference Result 3802 states and 5453 transitions. [2022-01-10 07:15:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 07:15:51,560 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.5) internal successors, (228), 23 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 07:15:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:51,565 INFO L225 Difference]: With dead ends: 3802 [2022-01-10 07:15:51,566 INFO L226 Difference]: Without dead ends: 1976 [2022-01-10 07:15:51,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2022-01-10 07:15:51,568 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 164 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:51,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 1363 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 120 Unchecked, 0.1s Time] [2022-01-10 07:15:51,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2022-01-10 07:15:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2022-01-10 07:15:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.4232911392405063) internal successors, (2811), 1975 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2811 transitions. [2022-01-10 07:15:51,627 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2811 transitions. Word has length 125 [2022-01-10 07:15:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:51,627 INFO L470 AbstractCegarLoop]: Abstraction has 1976 states and 2811 transitions. [2022-01-10 07:15:51,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.5) internal successors, (228), 23 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2811 transitions. [2022-01-10 07:15:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 07:15:51,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:51,628 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-01-10 07:15:51,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 07:15:51,835 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 07:15:51,836 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:51,837 INFO L85 PathProgramCache]: Analyzing trace with hash 573439311, now seen corresponding path program 1 times [2022-01-10 07:15:51,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:51,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706572745] [2022-01-10 07:15:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:51,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:51,838 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 07:15:51,840 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 07:15:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:51,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 07:15:51,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:15:53,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:15:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:15:53,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706572745] [2022-01-10 07:15:53,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706572745] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:15:53,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:15:53,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-01-10 07:15:53,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008125217] [2022-01-10 07:15:53,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:15:53,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 07:15:53,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 07:15:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-01-10 07:15:53,787 INFO L87 Difference]: Start difference. First operand 1976 states and 2811 transitions. Second operand has 22 states, 22 states have (on average 10.636363636363637) internal successors, (234), 21 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:54,024 INFO L93 Difference]: Finished difference Result 3962 states and 5640 transitions. [2022-01-10 07:15:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 07:15:54,025 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.636363636363637) internal successors, (234), 21 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 07:15:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:54,029 INFO L225 Difference]: With dead ends: 3962 [2022-01-10 07:15:54,029 INFO L226 Difference]: Without dead ends: 2136 [2022-01-10 07:15:54,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-01-10 07:15:54,032 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 123 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:54,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1518 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 160 Unchecked, 0.1s Time] [2022-01-10 07:15:54,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2022-01-10 07:15:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2086. [2022-01-10 07:15:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2085 states have (on average 1.4124700239808154) internal successors, (2945), 2085 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2945 transitions. [2022-01-10 07:15:54,097 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2945 transitions. Word has length 125 [2022-01-10 07:15:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:54,098 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 2945 transitions. [2022-01-10 07:15:54,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.636363636363637) internal successors, (234), 21 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2945 transitions. [2022-01-10 07:15:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 07:15:54,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:54,099 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-01-10 07:15:54,108 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 07:15:54,306 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 07:15:54,306 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1123948080, now seen corresponding path program 1 times [2022-01-10 07:15:54,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:54,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356010084] [2022-01-10 07:15:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:54,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:54,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:54,309 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 07:15:54,310 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 07:15:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:54,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:15:54,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 07:15:55,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:55,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:55,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356010084] [2022-01-10 07:15:55,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356010084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:55,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:55,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:15:55,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064689117] [2022-01-10 07:15:55,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:55,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:15:55,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:55,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:15:55,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:55,362 INFO L87 Difference]: Start difference. First operand 2086 states and 2945 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:55,459 INFO L93 Difference]: Finished difference Result 3926 states and 5600 transitions. [2022-01-10 07:15:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:15:55,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 07:15:55,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:55,473 INFO L225 Difference]: With dead ends: 3926 [2022-01-10 07:15:55,473 INFO L226 Difference]: Without dead ends: 2086 [2022-01-10 07:15:55,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:15:55,475 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 60 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:55,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 492 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 80 Unchecked, 0.0s Time] [2022-01-10 07:15:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-01-10 07:15:55,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2086. [2022-01-10 07:15:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2085 states have (on average 1.4115107913669065) internal successors, (2943), 2085 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2943 transitions. [2022-01-10 07:15:55,536 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2943 transitions. Word has length 125 [2022-01-10 07:15:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:55,536 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 2943 transitions. [2022-01-10 07:15:55,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2943 transitions. [2022-01-10 07:15:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 07:15:55,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:55,538 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-01-10 07:15:55,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-01-10 07:15:55,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:15:55,745 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1442122386, now seen corresponding path program 1 times [2022-01-10 07:15:55,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:55,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11896902] [2022-01-10 07:15:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:55,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:55,747 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:15:55,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 07:15:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:55,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:15:55,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 07:15:56,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:56,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:56,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11896902] [2022-01-10 07:15:56,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11896902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:56,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:56,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:15:56,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088394438] [2022-01-10 07:15:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:56,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:15:56,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:15:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:56,919 INFO L87 Difference]: Start difference. First operand 2086 states and 2943 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:57,012 INFO L93 Difference]: Finished difference Result 4024 states and 5720 transitions. [2022-01-10 07:15:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:15:57,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 07:15:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:57,020 INFO L225 Difference]: With dead ends: 4024 [2022-01-10 07:15:57,020 INFO L226 Difference]: Without dead ends: 2178 [2022-01-10 07:15:57,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:15:57,022 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 49 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:57,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 637 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 123 Unchecked, 0.0s Time] [2022-01-10 07:15:57,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2022-01-10 07:15:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 2178. [2022-01-10 07:15:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 1.4023886081763894) internal successors, (3053), 2177 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 3053 transitions. [2022-01-10 07:15:57,101 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 3053 transitions. Word has length 125 [2022-01-10 07:15:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:57,101 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 3053 transitions. [2022-01-10 07:15:57,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 3053 transitions. [2022-01-10 07:15:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 07:15:57,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:57,103 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-01-10 07:15:57,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 07:15:57,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:15:57,308 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:57,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1301183632, now seen corresponding path program 1 times [2022-01-10 07:15:57,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:57,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787157391] [2022-01-10 07:15:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:57,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:57,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:57,318 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:15:57,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 07:15:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:57,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:15:57,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 07:15:58,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:58,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:58,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787157391] [2022-01-10 07:15:58,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787157391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:58,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:58,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:15:58,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875904864] [2022-01-10 07:15:58,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:58,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:15:58,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:15:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:58,490 INFO L87 Difference]: Start difference. First operand 2178 states and 3053 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:58,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:58,660 INFO L93 Difference]: Finished difference Result 4186 states and 5910 transitions. [2022-01-10 07:15:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:15:58,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 07:15:58,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:58,669 INFO L225 Difference]: With dead ends: 4186 [2022-01-10 07:15:58,669 INFO L226 Difference]: Without dead ends: 2334 [2022-01-10 07:15:58,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:15:58,671 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 71 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:58,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 477 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 81 Unchecked, 0.1s Time] [2022-01-10 07:15:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2022-01-10 07:15:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2334. [2022-01-10 07:15:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2333 states have (on average 1.3849121303043292) internal successors, (3231), 2333 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3231 transitions. [2022-01-10 07:15:58,746 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3231 transitions. Word has length 125 [2022-01-10 07:15:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:15:58,746 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 3231 transitions. [2022-01-10 07:15:58,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3231 transitions. [2022-01-10 07:15:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 07:15:58,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:15:58,748 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-01-10 07:15:58,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-01-10 07:15:58,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:15:58,955 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:15:58,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:15:58,955 INFO L85 PathProgramCache]: Analyzing trace with hash -64218450, now seen corresponding path program 1 times [2022-01-10 07:15:58,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:15:58,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818477803] [2022-01-10 07:15:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:15:58,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:15:58,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:15:58,957 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:15:58,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 07:15:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:15:59,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:15:59,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:15:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:15:59,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:15:59,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:15:59,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818477803] [2022-01-10 07:15:59,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818477803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:15:59,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:15:59,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:15:59,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437507955] [2022-01-10 07:15:59,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:15:59,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:15:59,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:15:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:15:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:15:59,842 INFO L87 Difference]: Start difference. First operand 2334 states and 3231 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:15:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:15:59,953 INFO L93 Difference]: Finished difference Result 4192 states and 5910 transitions. [2022-01-10 07:15:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:15:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 07:15:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:15:59,956 INFO L225 Difference]: With dead ends: 4192 [2022-01-10 07:15:59,957 INFO L226 Difference]: Without dead ends: 2334 [2022-01-10 07:15:59,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:15:59,959 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 47 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:15:59,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 403 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 44 Unchecked, 0.0s Time] [2022-01-10 07:15:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2022-01-10 07:16:00,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2334. [2022-01-10 07:16:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2333 states have (on average 1.3814830690098585) internal successors, (3223), 2333 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3223 transitions. [2022-01-10 07:16:00,038 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3223 transitions. Word has length 125 [2022-01-10 07:16:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:00,038 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 3223 transitions. [2022-01-10 07:16:00,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3223 transitions. [2022-01-10 07:16:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:00,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:00,040 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:00,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:00,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:00,247 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -790136105, now seen corresponding path program 1 times [2022-01-10 07:16:00,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:00,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892926059] [2022-01-10 07:16:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:00,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:00,249 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:00,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 07:16:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:00,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:16:00,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 07:16:00,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:00,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:00,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892926059] [2022-01-10 07:16:00,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892926059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:00,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:00,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:16:00,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062950942] [2022-01-10 07:16:00,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:00,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:16:00,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:00,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:16:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:16:00,869 INFO L87 Difference]: Start difference. First operand 2334 states and 3223 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:01,003 INFO L93 Difference]: Finished difference Result 4190 states and 5899 transitions. [2022-01-10 07:16:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:16:01,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:01,007 INFO L225 Difference]: With dead ends: 4190 [2022-01-10 07:16:01,007 INFO L226 Difference]: Without dead ends: 2338 [2022-01-10 07:16:01,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:16:01,009 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 154 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:01,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 291 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 79 Unchecked, 0.1s Time] [2022-01-10 07:16:01,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-01-10 07:16:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2182. [2022-01-10 07:16:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2181 states have (on average 1.3966070609812014) internal successors, (3046), 2181 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 3046 transitions. [2022-01-10 07:16:01,079 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 3046 transitions. Word has length 126 [2022-01-10 07:16:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:01,079 INFO L470 AbstractCegarLoop]: Abstraction has 2182 states and 3046 transitions. [2022-01-10 07:16:01,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 3046 transitions. [2022-01-10 07:16:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:01,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:01,080 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:01,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-01-10 07:16:01,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:01,287 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:01,288 INFO L85 PathProgramCache]: Analyzing trace with hash 304709856, now seen corresponding path program 1 times [2022-01-10 07:16:01,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:01,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458238330] [2022-01-10 07:16:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:01,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:01,289 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:01,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 07:16:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:01,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:16:01,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 07:16:01,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:01,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:01,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458238330] [2022-01-10 07:16:01,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458238330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:01,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:01,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:16:01,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400746678] [2022-01-10 07:16:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:01,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:16:01,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:01,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:16:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:16:01,893 INFO L87 Difference]: Start difference. First operand 2182 states and 3046 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:02,023 INFO L93 Difference]: Finished difference Result 4033 states and 5716 transitions. [2022-01-10 07:16:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:16:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:02,026 INFO L225 Difference]: With dead ends: 4033 [2022-01-10 07:16:02,026 INFO L226 Difference]: Without dead ends: 2187 [2022-01-10 07:16:02,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:16:02,027 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 144 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:02,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 290 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 80 Unchecked, 0.0s Time] [2022-01-10 07:16:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2022-01-10 07:16:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2095. [2022-01-10 07:16:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2094 states have (on average 1.4063992359121298) internal successors, (2945), 2094 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2945 transitions. [2022-01-10 07:16:02,097 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2945 transitions. Word has length 126 [2022-01-10 07:16:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:02,097 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 2945 transitions. [2022-01-10 07:16:02,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2945 transitions. [2022-01-10 07:16:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:02,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:02,098 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:02,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:02,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:02,306 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2135913255, now seen corresponding path program 1 times [2022-01-10 07:16:02,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:02,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438151599] [2022-01-10 07:16:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:02,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:02,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:02,309 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:02,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 07:16:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:02,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 07:16:02,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:03,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:16:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:03,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:03,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438151599] [2022-01-10 07:16:03,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438151599] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:16:03,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:16:03,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-01-10 07:16:03,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262621871] [2022-01-10 07:16:03,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:16:03,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 07:16:03,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:03,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 07:16:03,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-01-10 07:16:03,858 INFO L87 Difference]: Start difference. First operand 2095 states and 2945 transitions. Second operand has 24 states, 24 states have (on average 10.0) internal successors, (240), 23 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:04,046 INFO L93 Difference]: Finished difference Result 4172 states and 5895 transitions. [2022-01-10 07:16:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 07:16:04,047 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.0) internal successors, (240), 23 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:04,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:04,051 INFO L225 Difference]: With dead ends: 4172 [2022-01-10 07:16:04,051 INFO L226 Difference]: Without dead ends: 2346 [2022-01-10 07:16:04,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2022-01-10 07:16:04,057 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 126 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:04,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 2028 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 146 Unchecked, 0.0s Time] [2022-01-10 07:16:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2022-01-10 07:16:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2315. [2022-01-10 07:16:04,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2314 states have (on average 1.3859118409680207) internal successors, (3207), 2314 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3207 transitions. [2022-01-10 07:16:04,147 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3207 transitions. Word has length 126 [2022-01-10 07:16:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:04,148 INFO L470 AbstractCegarLoop]: Abstraction has 2315 states and 3207 transitions. [2022-01-10 07:16:04,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.0) internal successors, (240), 23 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3207 transitions. [2022-01-10 07:16:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:04,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:04,150 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 07:16:04,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:04,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:04,358 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash 393370050, now seen corresponding path program 1 times [2022-01-10 07:16:04,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:04,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986956449] [2022-01-10 07:16:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:04,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:04,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:04,363 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:04,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-01-10 07:16:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:04,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:16:04,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:04,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:04,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:04,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986956449] [2022-01-10 07:16:04,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986956449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:04,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:04,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:16:04,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905962731] [2022-01-10 07:16:04,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:04,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:16:04,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:04,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:16:04,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:16:04,564 INFO L87 Difference]: Start difference. First operand 2315 states and 3207 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:04,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:04,672 INFO L93 Difference]: Finished difference Result 3231 states and 4529 transitions. [2022-01-10 07:16:04,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:16:04,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:04,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:04,674 INFO L225 Difference]: With dead ends: 3231 [2022-01-10 07:16:04,674 INFO L226 Difference]: Without dead ends: 1405 [2022-01-10 07:16:04,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 07:16:04,676 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 65 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:04,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 295 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:16:04,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-01-10 07:16:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1403. [2022-01-10 07:16:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 1.3330955777460771) internal successors, (1869), 1402 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1869 transitions. [2022-01-10 07:16:04,731 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1869 transitions. Word has length 126 [2022-01-10 07:16:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:04,732 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1869 transitions. [2022-01-10 07:16:04,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1869 transitions. [2022-01-10 07:16:04,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:04,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:04,733 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:04,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:04,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:04,940 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash 589254914, now seen corresponding path program 1 times [2022-01-10 07:16:04,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:04,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535716804] [2022-01-10 07:16:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:04,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:04,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:04,943 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:04,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-01-10 07:16:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:05,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:16:05,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 07:16:05,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:05,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:05,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535716804] [2022-01-10 07:16:05,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535716804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:05,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:05,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:16:05,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807392844] [2022-01-10 07:16:05,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:05,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:16:05,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:16:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:16:05,222 INFO L87 Difference]: Start difference. First operand 1403 states and 1869 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:05,318 INFO L93 Difference]: Finished difference Result 2331 states and 3192 transitions. [2022-01-10 07:16:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:16:05,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:05,320 INFO L225 Difference]: With dead ends: 2331 [2022-01-10 07:16:05,320 INFO L226 Difference]: Without dead ends: 1403 [2022-01-10 07:16:05,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 07:16:05,321 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 107 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:05,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 131 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:16:05,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-10 07:16:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1403. [2022-01-10 07:16:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 1.318830242510699) internal successors, (1849), 1402 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1849 transitions. [2022-01-10 07:16:05,379 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1849 transitions. Word has length 126 [2022-01-10 07:16:05,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:05,379 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1849 transitions. [2022-01-10 07:16:05,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1849 transitions. [2022-01-10 07:16:05,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:05,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:05,381 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:05,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:05,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:05,590 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:05,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:05,590 INFO L85 PathProgramCache]: Analyzing trace with hash 75243540, now seen corresponding path program 1 times [2022-01-10 07:16:05,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:05,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505333173] [2022-01-10 07:16:05,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:05,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:05,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:05,591 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:05,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-01-10 07:16:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:05,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:16:05,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 07:16:05,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:05,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505333173] [2022-01-10 07:16:05,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505333173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:05,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:05,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:16:05,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850568044] [2022-01-10 07:16:05,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:05,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:16:05,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:16:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:16:05,890 INFO L87 Difference]: Start difference. First operand 1403 states and 1849 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:06,005 INFO L93 Difference]: Finished difference Result 2337 states and 3167 transitions. [2022-01-10 07:16:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:16:06,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:06,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:06,007 INFO L225 Difference]: With dead ends: 2337 [2022-01-10 07:16:06,007 INFO L226 Difference]: Without dead ends: 1403 [2022-01-10 07:16:06,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 07:16:06,011 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 108 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:06,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 149 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:16:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-10 07:16:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1403. [2022-01-10 07:16:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 1.304564907275321) internal successors, (1829), 1402 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1829 transitions. [2022-01-10 07:16:06,092 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1829 transitions. Word has length 126 [2022-01-10 07:16:06,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:06,093 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1829 transitions. [2022-01-10 07:16:06,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1829 transitions. [2022-01-10 07:16:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:06,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:06,094 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:06,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:06,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:06,302 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:06,302 INFO L85 PathProgramCache]: Analyzing trace with hash -555576242, now seen corresponding path program 1 times [2022-01-10 07:16:06,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:06,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900276198] [2022-01-10 07:16:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:06,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:06,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:06,304 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:06,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-01-10 07:16:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:06,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:16:06,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 07:16:06,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:06,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:06,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900276198] [2022-01-10 07:16:06,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900276198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:06,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:06,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:16:06,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032730236] [2022-01-10 07:16:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:06,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:16:06,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:16:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:16:06,615 INFO L87 Difference]: Start difference. First operand 1403 states and 1829 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:06,746 INFO L93 Difference]: Finished difference Result 2343 states and 3142 transitions. [2022-01-10 07:16:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:16:06,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:06,748 INFO L225 Difference]: With dead ends: 2343 [2022-01-10 07:16:06,748 INFO L226 Difference]: Without dead ends: 1403 [2022-01-10 07:16:06,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 07:16:06,751 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 109 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:06,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 167 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:16:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-10 07:16:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1403. [2022-01-10 07:16:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 1.289586305278174) internal successors, (1808), 1402 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1808 transitions. [2022-01-10 07:16:06,818 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1808 transitions. Word has length 126 [2022-01-10 07:16:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:06,818 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1808 transitions. [2022-01-10 07:16:06,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1808 transitions. [2022-01-10 07:16:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:06,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:06,819 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:06,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:07,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:07,025 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1327615032, now seen corresponding path program 1 times [2022-01-10 07:16:07,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:07,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819474693] [2022-01-10 07:16:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:07,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:07,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:07,028 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:07,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-01-10 07:16:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:07,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:16:07,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:16:07,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:07,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:07,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819474693] [2022-01-10 07:16:07,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819474693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:07,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:07,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:16:07,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415165343] [2022-01-10 07:16:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:07,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:16:07,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:07,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:16:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:16:07,323 INFO L87 Difference]: Start difference. First operand 1403 states and 1808 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:07,440 INFO L93 Difference]: Finished difference Result 2349 states and 3116 transitions. [2022-01-10 07:16:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:16:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:07,442 INFO L225 Difference]: With dead ends: 2349 [2022-01-10 07:16:07,442 INFO L226 Difference]: Without dead ends: 1403 [2022-01-10 07:16:07,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 07:16:07,444 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 104 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:07,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 177 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:16:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-10 07:16:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1403. [2022-01-10 07:16:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 1.275320970042796) internal successors, (1788), 1402 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1788 transitions. [2022-01-10 07:16:07,507 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1788 transitions. Word has length 126 [2022-01-10 07:16:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:07,507 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1788 transitions. [2022-01-10 07:16:07,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1788 transitions. [2022-01-10 07:16:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:07,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:07,508 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:07,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:07,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:07,716 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:07,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash -509097753, now seen corresponding path program 1 times [2022-01-10 07:16:07,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:07,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786437826] [2022-01-10 07:16:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:07,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:07,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:07,718 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:07,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-01-10 07:16:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:07,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:16:07,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:08,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:16:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:09,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786437826] [2022-01-10 07:16:09,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786437826] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:16:09,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:16:09,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:16:09,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005486579] [2022-01-10 07:16:09,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:16:09,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:16:09,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:09,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:16:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:16:09,092 INFO L87 Difference]: Start difference. First operand 1403 states and 1788 transitions. Second operand has 16 states, 16 states have (on average 14.375) internal successors, (230), 15 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:09,296 INFO L93 Difference]: Finished difference Result 2342 states and 3076 transitions. [2022-01-10 07:16:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:16:09,296 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.375) internal successors, (230), 15 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:09,298 INFO L225 Difference]: With dead ends: 2342 [2022-01-10 07:16:09,298 INFO L226 Difference]: Without dead ends: 1424 [2022-01-10 07:16:09,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-01-10 07:16:09,299 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 144 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:09,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1291 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 277 Unchecked, 0.1s Time] [2022-01-10 07:16:09,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2022-01-10 07:16:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1360. [2022-01-10 07:16:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 1.2825607064017661) internal successors, (1743), 1359 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1743 transitions. [2022-01-10 07:16:09,361 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1743 transitions. Word has length 126 [2022-01-10 07:16:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:09,361 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1743 transitions. [2022-01-10 07:16:09,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.375) internal successors, (230), 15 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1743 transitions. [2022-01-10 07:16:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:09,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:09,362 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:09,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:09,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:09,570 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:09,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:09,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1466026136, now seen corresponding path program 1 times [2022-01-10 07:16:09,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:09,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64142138] [2022-01-10 07:16:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:09,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:09,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:09,572 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:09,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-01-10 07:16:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:09,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:16:09,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 07:16:10,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:10,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:10,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64142138] [2022-01-10 07:16:10,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64142138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:10,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:10,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:16:10,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010581560] [2022-01-10 07:16:10,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:10,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:16:10,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:16:10,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:16:10,267 INFO L87 Difference]: Start difference. First operand 1360 states and 1743 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:10,389 INFO L93 Difference]: Finished difference Result 2288 states and 3018 transitions. [2022-01-10 07:16:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:16:10,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:10,391 INFO L225 Difference]: With dead ends: 2288 [2022-01-10 07:16:10,391 INFO L226 Difference]: Without dead ends: 1360 [2022-01-10 07:16:10,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:16:10,392 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 130 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:10,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 289 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 74 Unchecked, 0.0s Time] [2022-01-10 07:16:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2022-01-10 07:16:10,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1260. [2022-01-10 07:16:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 1.3002382843526608) internal successors, (1637), 1259 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1637 transitions. [2022-01-10 07:16:10,447 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1637 transitions. Word has length 126 [2022-01-10 07:16:10,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:10,448 INFO L470 AbstractCegarLoop]: Abstraction has 1260 states and 1637 transitions. [2022-01-10 07:16:10,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:10,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1637 transitions. [2022-01-10 07:16:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:10,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:10,449 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:10,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:10,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:10,658 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1054140168, now seen corresponding path program 1 times [2022-01-10 07:16:10,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:10,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379825236] [2022-01-10 07:16:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:10,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:10,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:10,660 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:10,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-01-10 07:16:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:10,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 07:16:10,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:12,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:16:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:12,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:12,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379825236] [2022-01-10 07:16:12,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379825236] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:16:12,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:16:12,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-01-10 07:16:12,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742208473] [2022-01-10 07:16:12,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:16:12,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 07:16:12,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 07:16:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-01-10 07:16:12,673 INFO L87 Difference]: Start difference. First operand 1260 states and 1637 transitions. Second operand has 22 states, 22 states have (on average 10.727272727272727) internal successors, (236), 21 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:14,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:14,040 INFO L93 Difference]: Finished difference Result 6610 states and 8997 transitions. [2022-01-10 07:16:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-10 07:16:14,041 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.727272727272727) internal successors, (236), 21 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:14,048 INFO L225 Difference]: With dead ends: 6610 [2022-01-10 07:16:14,048 INFO L226 Difference]: Without dead ends: 5696 [2022-01-10 07:16:14,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=396, Invalid=2466, Unknown=0, NotChecked=0, Total=2862 [2022-01-10 07:16:14,051 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 1059 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 822 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:14,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 3073 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1052 Invalid, 0 Unknown, 822 Unchecked, 0.5s Time] [2022-01-10 07:16:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2022-01-10 07:16:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 3931. [2022-01-10 07:16:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 3930 states have (on average 1.3422391857506362) internal successors, (5275), 3930 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 5275 transitions. [2022-01-10 07:16:14,271 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 5275 transitions. Word has length 126 [2022-01-10 07:16:14,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:14,271 INFO L470 AbstractCegarLoop]: Abstraction has 3931 states and 5275 transitions. [2022-01-10 07:16:14,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.727272727272727) internal successors, (236), 21 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 5275 transitions. [2022-01-10 07:16:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:16:14,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:14,273 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:14,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:14,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:14,480 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:14,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:14,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1691797929, now seen corresponding path program 1 times [2022-01-10 07:16:14,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:14,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708129980] [2022-01-10 07:16:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:14,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:14,482 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:14,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-01-10 07:16:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:14,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:16:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:16:15,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:15,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:15,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708129980] [2022-01-10 07:16:15,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708129980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:15,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:15,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:16:15,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770048620] [2022-01-10 07:16:15,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:15,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:16:15,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:16:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:16:15,302 INFO L87 Difference]: Start difference. First operand 3931 states and 5275 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:15,534 INFO L93 Difference]: Finished difference Result 7581 states and 10244 transitions. [2022-01-10 07:16:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:16:15,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 07:16:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:15,538 INFO L225 Difference]: With dead ends: 7581 [2022-01-10 07:16:15,538 INFO L226 Difference]: Without dead ends: 3886 [2022-01-10 07:16:15,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:16:15,542 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 47 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:15,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 495 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 86 Unchecked, 0.0s Time] [2022-01-10 07:16:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2022-01-10 07:16:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3836. [2022-01-10 07:16:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 3835 states have (on average 1.348109517601043) internal successors, (5170), 3835 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 5170 transitions. [2022-01-10 07:16:15,728 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 5170 transitions. Word has length 126 [2022-01-10 07:16:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:15,728 INFO L470 AbstractCegarLoop]: Abstraction has 3836 states and 5170 transitions. [2022-01-10 07:16:15,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 5170 transitions. [2022-01-10 07:16:15,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 07:16:15,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:15,729 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:15,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:15,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:15,941 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:15,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1752651634, now seen corresponding path program 1 times [2022-01-10 07:16:15,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:15,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294893955] [2022-01-10 07:16:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:15,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:15,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:15,943 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:15,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-01-10 07:16:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:16,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:16:16,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:17,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:16:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:17,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:17,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294893955] [2022-01-10 07:16:17,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294893955] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:16:17,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:16:17,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:16:17,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059481572] [2022-01-10 07:16:17,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:16:17,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:16:17,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:17,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:16:17,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:16:17,444 INFO L87 Difference]: Start difference. First operand 3836 states and 5170 transitions. Second operand has 16 states, 16 states have (on average 15.125) internal successors, (242), 15 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:18,814 INFO L93 Difference]: Finished difference Result 15747 states and 21221 transitions. [2022-01-10 07:16:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-10 07:16:18,814 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 15 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 07:16:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:18,829 INFO L225 Difference]: With dead ends: 15747 [2022-01-10 07:16:18,829 INFO L226 Difference]: Without dead ends: 12097 [2022-01-10 07:16:18,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2022-01-10 07:16:18,834 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 843 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 758 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:18,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 2262 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 622 Invalid, 0 Unknown, 758 Unchecked, 0.3s Time] [2022-01-10 07:16:18,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12097 states. [2022-01-10 07:16:19,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12097 to 7405. [2022-01-10 07:16:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7405 states, 7404 states have (on average 1.3506212857914641) internal successors, (10000), 7404 states have internal predecessors, (10000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 10000 transitions. [2022-01-10 07:16:19,278 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 10000 transitions. Word has length 127 [2022-01-10 07:16:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:19,279 INFO L470 AbstractCegarLoop]: Abstraction has 7405 states and 10000 transitions. [2022-01-10 07:16:19,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 15 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 10000 transitions. [2022-01-10 07:16:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 07:16:19,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:19,281 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:19,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-01-10 07:16:19,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:19,484 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -471016477, now seen corresponding path program 1 times [2022-01-10 07:16:19,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:19,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682011546] [2022-01-10 07:16:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:19,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:19,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:19,485 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:19,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-01-10 07:16:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:19,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 07:16:19,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:21,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:16:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:21,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:21,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682011546] [2022-01-10 07:16:21,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682011546] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:16:21,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:16:21,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-01-10 07:16:21,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262539055] [2022-01-10 07:16:21,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:16:21,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 07:16:21,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 07:16:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-01-10 07:16:21,616 INFO L87 Difference]: Start difference. First operand 7405 states and 10000 transitions. Second operand has 24 states, 24 states have (on average 10.25) internal successors, (246), 23 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:22,240 INFO L93 Difference]: Finished difference Result 15027 states and 20258 transitions. [2022-01-10 07:16:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 07:16:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.25) internal successors, (246), 23 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 07:16:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:22,247 INFO L225 Difference]: With dead ends: 15027 [2022-01-10 07:16:22,247 INFO L226 Difference]: Without dead ends: 7729 [2022-01-10 07:16:22,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2022-01-10 07:16:22,267 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 165 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:22,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1574 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 0 Unknown, 192 Unchecked, 0.1s Time] [2022-01-10 07:16:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-01-10 07:16:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 7520. [2022-01-10 07:16:22,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 7519 states have (on average 1.3489825774704083) internal successors, (10143), 7519 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 10143 transitions. [2022-01-10 07:16:22,756 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 10143 transitions. Word has length 127 [2022-01-10 07:16:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:22,756 INFO L470 AbstractCegarLoop]: Abstraction has 7520 states and 10143 transitions. [2022-01-10 07:16:22,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.25) internal successors, (246), 23 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 10143 transitions. [2022-01-10 07:16:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 07:16:22,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:22,757 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 07:16:22,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-01-10 07:16:22,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:22,965 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash -384545076, now seen corresponding path program 1 times [2022-01-10 07:16:22,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:22,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017884568] [2022-01-10 07:16:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:22,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:22,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:22,972 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:22,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-01-10 07:16:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:23,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:16:23,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:23,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:23,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:16:23,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:23,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017884568] [2022-01-10 07:16:23,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017884568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:16:23,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:16:23,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:16:23,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241471436] [2022-01-10 07:16:23,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:16:23,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:16:23,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:16:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:16:23,211 INFO L87 Difference]: Start difference. First operand 7520 states and 10143 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:16:23,445 INFO L93 Difference]: Finished difference Result 11220 states and 15137 transitions. [2022-01-10 07:16:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:16:23,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 07:16:23,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:16:23,451 INFO L225 Difference]: With dead ends: 11220 [2022-01-10 07:16:23,451 INFO L226 Difference]: Without dead ends: 3922 [2022-01-10 07:16:23,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 07:16:23,458 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 61 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:16:23,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 268 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:16:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2022-01-10 07:16:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3920. [2022-01-10 07:16:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3919 states have (on average 1.319214085225823) internal successors, (5170), 3919 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5170 transitions. [2022-01-10 07:16:23,728 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5170 transitions. Word has length 127 [2022-01-10 07:16:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:16:23,728 INFO L470 AbstractCegarLoop]: Abstraction has 3920 states and 5170 transitions. [2022-01-10 07:16:23,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:16:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5170 transitions. [2022-01-10 07:16:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 07:16:23,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:16:23,729 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:16:23,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-01-10 07:16:23,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:16:23,937 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 07:16:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:16:23,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1097444651, now seen corresponding path program 1 times [2022-01-10 07:16:23,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:16:23,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072450027] [2022-01-10 07:16:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:16:23,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:16:23,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:16:23,939 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:16:23,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-01-10 07:16:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:16:24,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:16:24,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:16:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:25,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:16:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:16:25,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:16:25,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072450027] [2022-01-10 07:16:25,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072450027] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:16:25,408 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:16:25,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:16:25,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306401923] [2022-01-10 07:16:25,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:16:25,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:16:25,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:16:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:16:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:16:25,409 INFO L87 Difference]: Start difference. First operand 3920 states and 5170 transitions. Second operand has 16 states, 16 states have (on average 15.5) internal successors, (248), 15 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)