/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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:05:55,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:05:55,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:05:55,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:05:55,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:05:55,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:05:55,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:05:55,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:05:55,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:05:55,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:05:55,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:05:55,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:05:55,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:05:55,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:05:55,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:05:55,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:05:55,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:05:55,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:05:55,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:05:55,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:05:55,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:05:55,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:05:55,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:05:55,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:05:55,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:05:55,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:05:55,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:05:55,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:05:55,326 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 07:05:55,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:05:55,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:05:55,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:05:55,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:05:55,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:05:55,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:05:55,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:05:55,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:05:55,344 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:05:55,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:05:55,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:05:55,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:05:55,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:05:55,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:05:55,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:05:55,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:05:55,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:05:55,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:05:55,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:05:55,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:05:55,566 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:05:55,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:05:55,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d9b00d7/401e188803e541ce9a41c8d3f4cbace4/FLAGafe62cddf [2022-01-10 07:05:56,039 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:05:56,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:05:56,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d9b00d7/401e188803e541ce9a41c8d3f4cbace4/FLAGafe62cddf [2022-01-10 07:05:56,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d9b00d7/401e188803e541ce9a41c8d3f4cbace4 [2022-01-10 07:05:56,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:05:56,372 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:05:56,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:05:56,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:05:56,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:05:56,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:05:56" (1/1) ... [2022-01-10 07:05:56,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa42927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:56, skipping insertion in model container [2022-01-10 07:05:56,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:05:56" (1/1) ... [2022-01-10 07:05:56,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:05:56,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:05:56,745 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8637,8650] [2022-01-10 07:05:56,794 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15862,15875] [2022-01-10 07:05:56,801 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18059,18072] [2022-01-10 07:05:56,817 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19083,19096] [2022-01-10 07:05:56,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:05:56,977 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:05:57,005 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8637,8650] [2022-01-10 07:05:57,021 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15862,15875] [2022-01-10 07:05:57,025 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18059,18072] [2022-01-10 07:05:57,027 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19083,19096] [2022-01-10 07:05:57,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:05:57,099 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:05:57,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57 WrapperNode [2022-01-10 07:05:57,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:05:57,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:05:57,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:05:57,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:05:57,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,182 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2582 [2022-01-10 07:05:57,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:05:57,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:05:57,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:05:57,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:05:57,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:05:57,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:05:57,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:05:57,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:05:57,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (1/1) ... [2022-01-10 07:05:57,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:05:57,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:05:57,317 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 07:05:57,340 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 07:05:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:05:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:05:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:05:57,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:05:57,540 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:05:57,541 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:05:58,626 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:05:58,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:05:58,635 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:05:58,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:05:58 BoogieIcfgContainer [2022-01-10 07:05:58,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:05:58,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:05:58,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:05:58,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:05:58,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:05:56" (1/3) ... [2022-01-10 07:05:58,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e0f242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:05:58, skipping insertion in model container [2022-01-10 07:05:58,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:57" (2/3) ... [2022-01-10 07:05:58,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e0f242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:05:58, skipping insertion in model container [2022-01-10 07:05:58,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:05:58" (3/3) ... [2022-01-10 07:05:58,648 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:05:58,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:05:58,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 07:05:58,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:05:58,700 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 07:05:58,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 07:05:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 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 07:05:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:05:58,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:05:58,773 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] [2022-01-10 07:05:58,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:05:58,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:05:58,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1707798208, now seen corresponding path program 1 times [2022-01-10 07:05:58,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:05:58,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153717984] [2022-01-10 07:05:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:05:58,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:05:58,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:05:58,795 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 07:05:58,851 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 07:05:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:05:58,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:05:59,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:05:59,378 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 07:05:59,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:05:59,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:05:59,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153717984] [2022-01-10 07:05:59,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153717984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:05:59,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:05:59,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:05:59,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710732430] [2022-01-10 07:05:59,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:05:59,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:05:59,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:05:59,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:05:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:05:59,413 INFO L87 Difference]: Start difference. First operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 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 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 07:05:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:05:59,774 INFO L93 Difference]: Finished difference Result 632 states and 1111 transitions. [2022-01-10 07:05:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:05:59,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 07:05:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:05:59,787 INFO L225 Difference]: With dead ends: 632 [2022-01-10 07:05:59,787 INFO L226 Difference]: Without dead ends: 366 [2022-01-10 07:05:59,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 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 07:05:59,798 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 52 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:05:59,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1911 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 405 Invalid, 0 Unknown, 218 Unchecked, 0.3s Time] [2022-01-10 07:05:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-10 07:05:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-01-10 07:05:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 1.328729281767956) internal successors, (481), 365 states have internal predecessors, (481), 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 07:05:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 481 transitions. [2022-01-10 07:05:59,840 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 481 transitions. Word has length 51 [2022-01-10 07:05:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:05:59,840 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 481 transitions. [2022-01-10 07:05:59,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 07:05:59,840 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 481 transitions. [2022-01-10 07:05:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:05:59,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:05:59,849 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] [2022-01-10 07:05:59,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:00,056 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 07:06:00,057 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:00,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:00,057 INFO L85 PathProgramCache]: Analyzing trace with hash -716443789, now seen corresponding path program 1 times [2022-01-10 07:06:00,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:00,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94042857] [2022-01-10 07:06:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:00,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:00,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:00,059 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 07:06:00,069 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 07:06:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:00,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:00,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:00,394 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 07:06:00,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:00,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:00,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94042857] [2022-01-10 07:06:00,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94042857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:00,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:00,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:00,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076781271] [2022-01-10 07:06:00,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:00,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:00,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:00,397 INFO L87 Difference]: Start difference. First operand 366 states and 481 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 07:06:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:00,550 INFO L93 Difference]: Finished difference Result 539 states and 733 transitions. [2022-01-10 07:06:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:00,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-01-10 07:06:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:00,552 INFO L225 Difference]: With dead ends: 539 [2022-01-10 07:06:00,552 INFO L226 Difference]: Without dead ends: 376 [2022-01-10 07:06:00,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 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 07:06:00,554 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 26 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:00,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 781 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-01-10 07:06:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-01-10 07:06:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 373. [2022-01-10 07:06:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 369 states have (on average 1.3306233062330624) internal successors, (491), 372 states have internal predecessors, (491), 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 07:06:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 491 transitions. [2022-01-10 07:06:00,565 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 491 transitions. Word has length 52 [2022-01-10 07:06:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:00,565 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 491 transitions. [2022-01-10 07:06:00,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 07:06:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 491 transitions. [2022-01-10 07:06:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:00,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:00,566 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] [2022-01-10 07:06:00,587 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 07:06:00,777 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 07:06:00,778 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:00,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash -572159907, now seen corresponding path program 1 times [2022-01-10 07:06:00,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:00,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118522237] [2022-01-10 07:06:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:00,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:00,780 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 07:06:00,782 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 07:06:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:00,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:00,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:01,134 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 07:06:01,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:01,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:01,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118522237] [2022-01-10 07:06:01,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118522237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:01,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:01,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:01,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957023755] [2022-01-10 07:06:01,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:01,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:01,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:01,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:01,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:01,140 INFO L87 Difference]: Start difference. First operand 373 states and 491 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 07:06:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:01,232 INFO L93 Difference]: Finished difference Result 613 states and 841 transitions. [2022-01-10 07:06:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:06:01,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2022-01-10 07:06:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:01,234 INFO L225 Difference]: With dead ends: 613 [2022-01-10 07:06:01,234 INFO L226 Difference]: Without dead ends: 443 [2022-01-10 07:06:01,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:01,236 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 398 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:01,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 928 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2022-01-10 07:06:01,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-01-10 07:06:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 363. [2022-01-10 07:06:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 359 states have (on average 1.3286908077994428) internal successors, (477), 362 states have internal predecessors, (477), 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 07:06:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 477 transitions. [2022-01-10 07:06:01,245 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 477 transitions. Word has length 52 [2022-01-10 07:06:01,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:01,245 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 477 transitions. [2022-01-10 07:06:01,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 07:06:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 477 transitions. [2022-01-10 07:06:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:01,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:01,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:06:01,268 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 07:06:01,453 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 07:06:01,454 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:01,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1296606516, now seen corresponding path program 1 times [2022-01-10 07:06:01,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:01,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182405596] [2022-01-10 07:06:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:01,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:01,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:01,456 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 07:06:01,457 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 07:06:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:01,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:01,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:01,774 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 07:06:01,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:01,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:01,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182405596] [2022-01-10 07:06:01,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182405596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:01,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:01,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:01,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909949984] [2022-01-10 07:06:01,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:01,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:01,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:01,776 INFO L87 Difference]: Start difference. First operand 363 states and 477 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 07:06:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:01,940 INFO L93 Difference]: Finished difference Result 544 states and 735 transitions. [2022-01-10 07:06:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:01,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-01-10 07:06:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:01,941 INFO L225 Difference]: With dead ends: 544 [2022-01-10 07:06:01,941 INFO L226 Difference]: Without dead ends: 364 [2022-01-10 07:06:01,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 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 07:06:01,943 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 18 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:01,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1268 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 183 Unchecked, 0.1s Time] [2022-01-10 07:06:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-10 07:06:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2022-01-10 07:06:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 360 states have (on average 1.3277777777777777) internal successors, (478), 363 states have internal predecessors, (478), 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 07:06:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 478 transitions. [2022-01-10 07:06:01,952 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 478 transitions. Word has length 52 [2022-01-10 07:06:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:01,952 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 478 transitions. [2022-01-10 07:06:01,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 07:06:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 478 transitions. [2022-01-10 07:06:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:01,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:01,953 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] [2022-01-10 07:06:01,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:02,161 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 07:06:02,161 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash 748499823, now seen corresponding path program 1 times [2022-01-10 07:06:02,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:02,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760194938] [2022-01-10 07:06:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:02,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:02,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:02,163 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 07:06:02,165 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 07:06:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:02,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:02,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:02,453 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 07:06:02,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:02,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:02,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760194938] [2022-01-10 07:06:02,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760194938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:02,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:02,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:02,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13801386] [2022-01-10 07:06:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:02,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:02,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:02,454 INFO L87 Difference]: Start difference. First operand 364 states and 478 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 07:06:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:02,615 INFO L93 Difference]: Finished difference Result 549 states and 742 transitions. [2022-01-10 07:06:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:02,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2022-01-10 07:06:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:02,617 INFO L225 Difference]: With dead ends: 549 [2022-01-10 07:06:02,617 INFO L226 Difference]: Without dead ends: 369 [2022-01-10 07:06:02,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 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 07:06:02,618 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 28 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:02,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 752 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-01-10 07:06:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-10 07:06:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 368. [2022-01-10 07:06:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 364 states have (on average 1.3269230769230769) internal successors, (483), 367 states have internal predecessors, (483), 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 07:06:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 483 transitions. [2022-01-10 07:06:02,625 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 483 transitions. Word has length 53 [2022-01-10 07:06:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:02,625 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 483 transitions. [2022-01-10 07:06:02,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 07:06:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 483 transitions. [2022-01-10 07:06:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:02,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:02,626 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] [2022-01-10 07:06:02,647 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 07:06:02,833 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 07:06:02,833 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:02,834 INFO L85 PathProgramCache]: Analyzing trace with hash -696754941, now seen corresponding path program 1 times [2022-01-10 07:06:02,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:02,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484088256] [2022-01-10 07:06:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:02,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:02,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:02,835 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 07:06:02,839 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 07:06:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:02,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:02,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:03,016 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 07:06:03,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:03,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:03,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484088256] [2022-01-10 07:06:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484088256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:03,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:03,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:03,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200912849] [2022-01-10 07:06:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:03,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:03,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:03,018 INFO L87 Difference]: Start difference. First operand 368 states and 483 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 07:06:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:03,043 INFO L93 Difference]: Finished difference Result 630 states and 864 transitions. [2022-01-10 07:06:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-01-10 07:06:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:03,045 INFO L225 Difference]: With dead ends: 630 [2022-01-10 07:06:03,045 INFO L226 Difference]: Without dead ends: 485 [2022-01-10 07:06:03,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 07:06:03,046 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 257 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:03,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 848 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-01-10 07:06:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2022-01-10 07:06:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 475 states have (on average 1.3621052631578947) internal successors, (647), 478 states have internal predecessors, (647), 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 07:06:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 647 transitions. [2022-01-10 07:06:03,056 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 647 transitions. Word has length 53 [2022-01-10 07:06:03,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:03,056 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 647 transitions. [2022-01-10 07:06:03,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 07:06:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 647 transitions. [2022-01-10 07:06:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:03,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:03,057 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] [2022-01-10 07:06:03,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:03,266 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 07:06:03,266 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash -338401251, now seen corresponding path program 1 times [2022-01-10 07:06:03,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:03,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138823578] [2022-01-10 07:06:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:03,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:03,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:03,268 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 07:06:03,270 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 07:06:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:03,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:03,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:03,529 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 07:06:03,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:03,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:03,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138823578] [2022-01-10 07:06:03,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138823578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:03,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:03,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:03,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981887642] [2022-01-10 07:06:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:03,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:03,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:03,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:03,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:03,531 INFO L87 Difference]: Start difference. First operand 479 states and 647 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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 07:06:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:03,896 INFO L93 Difference]: Finished difference Result 1184 states and 1691 transitions. [2022-01-10 07:06:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:03,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2022-01-10 07:06:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:03,899 INFO L225 Difference]: With dead ends: 1184 [2022-01-10 07:06:03,899 INFO L226 Difference]: Without dead ends: 921 [2022-01-10 07:06:03,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:06:03,900 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1454 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:03,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 747 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-01-10 07:06:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 487. [2022-01-10 07:06:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 483 states have (on average 1.3478260869565217) internal successors, (651), 486 states have internal predecessors, (651), 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 07:06:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 651 transitions. [2022-01-10 07:06:03,915 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 651 transitions. Word has length 53 [2022-01-10 07:06:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:03,915 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 651 transitions. [2022-01-10 07:06:03,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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 07:06:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 651 transitions. [2022-01-10 07:06:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:03,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:03,917 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] [2022-01-10 07:06:03,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 07:06:04,125 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 07:06:04,126 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash -57203721, now seen corresponding path program 1 times [2022-01-10 07:06:04,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:04,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914249432] [2022-01-10 07:06:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:04,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:04,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:04,128 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 07:06:04,130 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 07:06:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:04,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:04,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:04,302 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 07:06:04,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:04,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914249432] [2022-01-10 07:06:04,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914249432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:04,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:04,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:04,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104488369] [2022-01-10 07:06:04,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:04,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:04,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:04,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:04,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:04,305 INFO L87 Difference]: Start difference. First operand 487 states and 651 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 07:06:04,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:04,342 INFO L93 Difference]: Finished difference Result 995 states and 1364 transitions. [2022-01-10 07:06:04,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:04,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-01-10 07:06:04,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:04,345 INFO L225 Difference]: With dead ends: 995 [2022-01-10 07:06:04,345 INFO L226 Difference]: Without dead ends: 734 [2022-01-10 07:06:04,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 07:06:04,347 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 347 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:04,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 956 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-01-10 07:06:04,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 728. [2022-01-10 07:06:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 724 states have (on average 1.3425414364640884) internal successors, (972), 727 states have internal predecessors, (972), 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 07:06:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 972 transitions. [2022-01-10 07:06:04,366 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 972 transitions. Word has length 53 [2022-01-10 07:06:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:04,367 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 972 transitions. [2022-01-10 07:06:04,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 07:06:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 972 transitions. [2022-01-10 07:06:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:04,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:04,368 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] [2022-01-10 07:06:04,379 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 07:06:04,579 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 07:06:04,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:04,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1841496951, now seen corresponding path program 1 times [2022-01-10 07:06:04,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:04,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205500889] [2022-01-10 07:06:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:04,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:04,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:04,582 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 07:06:04,582 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 07:06:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:04,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:04,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:04,817 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 07:06:04,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:04,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:04,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205500889] [2022-01-10 07:06:04,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205500889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:04,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:04,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:04,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440184990] [2022-01-10 07:06:04,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:04,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:04,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:04,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:04,818 INFO L87 Difference]: Start difference. First operand 728 states and 972 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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 07:06:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:05,234 INFO L93 Difference]: Finished difference Result 2249 states and 3183 transitions. [2022-01-10 07:06:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2022-01-10 07:06:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:05,240 INFO L225 Difference]: With dead ends: 2249 [2022-01-10 07:06:05,240 INFO L226 Difference]: Without dead ends: 1960 [2022-01-10 07:06:05,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:06:05,242 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 1555 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:05,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 811 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2022-01-10 07:06:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 752. [2022-01-10 07:06:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 748 states have (on average 1.3235294117647058) internal successors, (990), 751 states have internal predecessors, (990), 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 07:06:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 990 transitions. [2022-01-10 07:06:05,276 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 990 transitions. Word has length 53 [2022-01-10 07:06:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:05,276 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 990 transitions. [2022-01-10 07:06:05,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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 07:06:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 990 transitions. [2022-01-10 07:06:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:05,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:05,278 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] [2022-01-10 07:06:05,285 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 07:06:05,485 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 07:06:05,486 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash 634656141, now seen corresponding path program 1 times [2022-01-10 07:06:05,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:05,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639701226] [2022-01-10 07:06:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:05,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:05,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:05,488 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 07:06:05,490 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 07:06:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:05,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:05,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:05,802 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 07:06:05,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:05,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:05,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639701226] [2022-01-10 07:06:05,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639701226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:05,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:05,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:05,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198185771] [2022-01-10 07:06:05,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:05,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:05,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:05,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:05,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:05,804 INFO L87 Difference]: Start difference. First operand 752 states and 990 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:05,950 INFO L93 Difference]: Finished difference Result 1057 states and 1427 transitions. [2022-01-10 07:06:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 07:06:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:05,952 INFO L225 Difference]: With dead ends: 1057 [2022-01-10 07:06:05,952 INFO L226 Difference]: Without dead ends: 749 [2022-01-10 07:06:05,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 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 07:06:05,953 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 21 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:05,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1008 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 186 Unchecked, 0.1s Time] [2022-01-10 07:06:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-01-10 07:06:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2022-01-10 07:06:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 745 states have (on average 1.323489932885906) internal successors, (986), 748 states have internal predecessors, (986), 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 07:06:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 986 transitions. [2022-01-10 07:06:05,974 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 986 transitions. Word has length 54 [2022-01-10 07:06:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:05,974 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 986 transitions. [2022-01-10 07:06:05,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 986 transitions. [2022-01-10 07:06:05,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:05,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:05,975 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] [2022-01-10 07:06:05,996 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 07:06:06,183 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 07:06:06,183 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:06,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash -437778262, now seen corresponding path program 1 times [2022-01-10 07:06:06,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:06,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972723426] [2022-01-10 07:06:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:06,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:06,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:06,185 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 07:06:06,186 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 07:06:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:06,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:06,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:06,369 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 07:06:06,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:06,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972723426] [2022-01-10 07:06:06,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972723426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:06,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:06,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:06,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364823400] [2022-01-10 07:06:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:06,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:06,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:06,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:06,371 INFO L87 Difference]: Start difference. First operand 749 states and 986 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:06,433 INFO L93 Difference]: Finished difference Result 1481 states and 1999 transitions. [2022-01-10 07:06:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:06,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2022-01-10 07:06:06,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:06,436 INFO L225 Difference]: With dead ends: 1481 [2022-01-10 07:06:06,437 INFO L226 Difference]: Without dead ends: 1132 [2022-01-10 07:06:06,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 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 07:06:06,438 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 247 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:06,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 864 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-01-10 07:06:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1125. [2022-01-10 07:06:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1121 states have (on average 1.3309545049063336) internal successors, (1492), 1124 states have internal predecessors, (1492), 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 07:06:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1492 transitions. [2022-01-10 07:06:06,474 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1492 transitions. Word has length 54 [2022-01-10 07:06:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:06,475 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1492 transitions. [2022-01-10 07:06:06,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 07:06:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1492 transitions. [2022-01-10 07:06:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:06,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:06,476 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] [2022-01-10 07:06:06,485 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 07:06:06,683 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 07:06:06,684 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:06,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1470909546, now seen corresponding path program 1 times [2022-01-10 07:06:06,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:06,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621454971] [2022-01-10 07:06:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:06,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:06,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:06,686 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 07:06:06,686 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 07:06:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:06,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:06,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:07,304 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 07:06:07,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:07,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:07,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621454971] [2022-01-10 07:06:07,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621454971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:07,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:07,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:07,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610008882] [2022-01-10 07:06:07,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:07,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:07,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:07,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:07,306 INFO L87 Difference]: Start difference. First operand 1125 states and 1492 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:07,539 INFO L93 Difference]: Finished difference Result 1386 states and 1858 transitions. [2022-01-10 07:06:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:07,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 07:06:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:07,542 INFO L225 Difference]: With dead ends: 1386 [2022-01-10 07:06:07,543 INFO L226 Difference]: Without dead ends: 1139 [2022-01-10 07:06:07,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 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 07:06:07,544 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 40 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 524 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:07,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 1870 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 524 Unchecked, 0.2s Time] [2022-01-10 07:06:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-10 07:06:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1134. [2022-01-10 07:06:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1130 states have (on average 1.331858407079646) internal successors, (1505), 1133 states have internal predecessors, (1505), 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 07:06:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1505 transitions. [2022-01-10 07:06:07,578 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1505 transitions. Word has length 54 [2022-01-10 07:06:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:07,578 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1505 transitions. [2022-01-10 07:06:07,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1505 transitions. [2022-01-10 07:06:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:07,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:07,582 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] [2022-01-10 07:06:07,590 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 07:06:07,788 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 07:06:07,789 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:07,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:07,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1990714005, now seen corresponding path program 1 times [2022-01-10 07:06:07,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:07,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027994684] [2022-01-10 07:06:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:07,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:07,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:07,791 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 07:06:07,792 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 07:06:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:07,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:07,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:07,969 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 07:06:07,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:07,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:07,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027994684] [2022-01-10 07:06:07,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027994684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:07,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:07,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:07,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511604816] [2022-01-10 07:06:07,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:07,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:07,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:07,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:07,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:07,970 INFO L87 Difference]: Start difference. First operand 1134 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:08,059 INFO L93 Difference]: Finished difference Result 2148 states and 2892 transitions. [2022-01-10 07:06:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:08,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2022-01-10 07:06:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:08,064 INFO L225 Difference]: With dead ends: 2148 [2022-01-10 07:06:08,064 INFO L226 Difference]: Without dead ends: 1569 [2022-01-10 07:06:08,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 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 07:06:08,066 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 355 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:08,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 524 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-01-10 07:06:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1555. [2022-01-10 07:06:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1551 states have (on average 1.3713733075435204) internal successors, (2127), 1554 states have internal predecessors, (2127), 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 07:06:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2127 transitions. [2022-01-10 07:06:08,123 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2127 transitions. Word has length 54 [2022-01-10 07:06:08,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:08,123 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 2127 transitions. [2022-01-10 07:06:08,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 07:06:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2127 transitions. [2022-01-10 07:06:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:08,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:08,125 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] [2022-01-10 07:06:08,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:08,332 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 07:06:08,332 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:08,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:08,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1866987345, now seen corresponding path program 1 times [2022-01-10 07:06:08,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:08,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982047372] [2022-01-10 07:06:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:08,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:08,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:08,334 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 07:06:08,345 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 07:06:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:08,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:06:08,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:08,763 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 07:06:08,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:08,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:08,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982047372] [2022-01-10 07:06:08,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982047372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:08,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:08,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:06:08,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364570941] [2022-01-10 07:06:08,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:08,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:06:08,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:06:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:06:08,764 INFO L87 Difference]: Start difference. First operand 1555 states and 2127 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 07:06:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:09,061 INFO L93 Difference]: Finished difference Result 3368 states and 4725 transitions. [2022-01-10 07:06:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 55 [2022-01-10 07:06:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:09,069 INFO L225 Difference]: With dead ends: 3368 [2022-01-10 07:06:09,069 INFO L226 Difference]: Without dead ends: 2509 [2022-01-10 07:06:09,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 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 07:06:09,071 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 429 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:09,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1378 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 347 Unchecked, 0.2s Time] [2022-01-10 07:06:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2022-01-10 07:06:09,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 1524. [2022-01-10 07:06:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1520 states have (on average 1.3703947368421052) internal successors, (2083), 1523 states have internal predecessors, (2083), 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 07:06:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2083 transitions. [2022-01-10 07:06:09,149 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2083 transitions. Word has length 55 [2022-01-10 07:06:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:09,149 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 2083 transitions. [2022-01-10 07:06:09,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 07:06:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2083 transitions. [2022-01-10 07:06:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:09,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:09,150 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] [2022-01-10 07:06:09,158 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 07:06:09,357 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 07:06:09,358 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:09,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:09,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1508633655, now seen corresponding path program 1 times [2022-01-10 07:06:09,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:09,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618742640] [2022-01-10 07:06:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:09,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:09,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:09,360 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 07:06:09,361 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 07:06:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:09,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:09,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:09,989 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 07:06:09,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:09,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:09,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618742640] [2022-01-10 07:06:09,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618742640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:09,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:09,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:09,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938983756] [2022-01-10 07:06:09,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:09,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:09,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:09,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:09,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:09,990 INFO L87 Difference]: Start difference. First operand 1524 states and 2083 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 07:06:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:10,210 INFO L93 Difference]: Finished difference Result 2712 states and 3795 transitions. [2022-01-10 07:06:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:10,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2022-01-10 07:06:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:10,216 INFO L225 Difference]: With dead ends: 2712 [2022-01-10 07:06:10,216 INFO L226 Difference]: Without dead ends: 1939 [2022-01-10 07:06:10,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 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 07:06:10,218 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 167 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 547 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:10,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1999 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 547 Unchecked, 0.1s Time] [2022-01-10 07:06:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2022-01-10 07:06:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1524. [2022-01-10 07:06:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1520 states have (on average 1.3697368421052631) internal successors, (2082), 1523 states have internal predecessors, (2082), 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 07:06:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2082 transitions. [2022-01-10 07:06:10,283 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2082 transitions. Word has length 55 [2022-01-10 07:06:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:10,283 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 2082 transitions. [2022-01-10 07:06:10,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 07:06:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2082 transitions. [2022-01-10 07:06:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:10,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:10,285 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] [2022-01-10 07:06:10,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 07:06:10,492 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 07:06:10,493 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1235712110, now seen corresponding path program 1 times [2022-01-10 07:06:10,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:10,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35535316] [2022-01-10 07:06:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:10,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:10,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:10,495 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 07:06:10,496 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 07:06:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:10,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:10,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:11,088 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 07:06:11,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:11,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:11,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35535316] [2022-01-10 07:06:11,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35535316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:11,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:11,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:11,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780837767] [2022-01-10 07:06:11,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:11,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:11,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:11,089 INFO L87 Difference]: Start difference. First operand 1524 states and 2082 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 07:06:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:11,315 INFO L93 Difference]: Finished difference Result 1537 states and 2094 transitions. [2022-01-10 07:06:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:11,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2022-01-10 07:06:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:11,319 INFO L225 Difference]: With dead ends: 1537 [2022-01-10 07:06:11,319 INFO L226 Difference]: Without dead ends: 1532 [2022-01-10 07:06:11,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 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 07:06:11,320 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 74 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:11,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1001 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 112 Unchecked, 0.2s Time] [2022-01-10 07:06:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2022-01-10 07:06:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1524. [2022-01-10 07:06:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1520 states have (on average 1.369078947368421) internal successors, (2081), 1523 states have internal predecessors, (2081), 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 07:06:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2081 transitions. [2022-01-10 07:06:11,402 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2081 transitions. Word has length 55 [2022-01-10 07:06:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:11,402 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 2081 transitions. [2022-01-10 07:06:11,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 07:06:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2081 transitions. [2022-01-10 07:06:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:11,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:11,404 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] [2022-01-10 07:06:11,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:06:11,611 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 07:06:11,611 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1133445398, now seen corresponding path program 1 times [2022-01-10 07:06:11,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:11,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923329653] [2022-01-10 07:06:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:11,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:11,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:11,613 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 07:06:11,614 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 07:06:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:11,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:11,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:11,870 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 07:06:11,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:11,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:11,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923329653] [2022-01-10 07:06:11,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923329653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:11,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:11,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:11,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231805710] [2022-01-10 07:06:11,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:11,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:11,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:11,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:11,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:11,872 INFO L87 Difference]: Start difference. First operand 1524 states and 2081 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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 07:06:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:12,472 INFO L93 Difference]: Finished difference Result 5245 states and 7392 transitions. [2022-01-10 07:06:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:12,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2022-01-10 07:06:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:12,486 INFO L225 Difference]: With dead ends: 5245 [2022-01-10 07:06:12,486 INFO L226 Difference]: Without dead ends: 4474 [2022-01-10 07:06:12,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:06:12,488 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1152 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:12,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 847 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2022-01-10 07:06:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 1541. [2022-01-10 07:06:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1537 states have (on average 1.357839947950553) internal successors, (2087), 1540 states have internal predecessors, (2087), 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 07:06:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2087 transitions. [2022-01-10 07:06:12,584 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2087 transitions. Word has length 55 [2022-01-10 07:06:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:12,585 INFO L470 AbstractCegarLoop]: Abstraction has 1541 states and 2087 transitions. [2022-01-10 07:06:12,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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 07:06:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2087 transitions. [2022-01-10 07:06:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 07:06:12,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:12,586 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] [2022-01-10 07:06:12,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:12,793 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 07:06:12,793 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1411677613, now seen corresponding path program 1 times [2022-01-10 07:06:12,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:12,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335559116] [2022-01-10 07:06:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:12,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:12,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:12,795 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 07:06:12,796 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 07:06:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:12,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:12,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:12,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:12,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335559116] [2022-01-10 07:06:12,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335559116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:12,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:12,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:12,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153680444] [2022-01-10 07:06:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:12,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:12,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:12,975 INFO L87 Difference]: Start difference. First operand 1541 states and 2087 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:13,074 INFO L93 Difference]: Finished difference Result 2055 states and 2785 transitions. [2022-01-10 07:06:13,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:13,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 07:06:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:13,079 INFO L225 Difference]: With dead ends: 2055 [2022-01-10 07:06:13,079 INFO L226 Difference]: Without dead ends: 1548 [2022-01-10 07:06:13,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 07:06:13,080 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 237 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:13,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 792 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:13,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2022-01-10 07:06:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1541. [2022-01-10 07:06:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1537 states have (on average 1.3396226415094339) internal successors, (2059), 1540 states have internal predecessors, (2059), 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 07:06:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2059 transitions. [2022-01-10 07:06:13,157 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2059 transitions. Word has length 56 [2022-01-10 07:06:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:13,157 INFO L470 AbstractCegarLoop]: Abstraction has 1541 states and 2059 transitions. [2022-01-10 07:06:13,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2059 transitions. [2022-01-10 07:06:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 07:06:13,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:13,159 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] [2022-01-10 07:06:13,167 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 07:06:13,366 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 07:06:13,366 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1038080617, now seen corresponding path program 1 times [2022-01-10 07:06:13,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:13,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076932347] [2022-01-10 07:06:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:13,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:13,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:13,368 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 07:06:13,372 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 07:06:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:13,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:13,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:13,541 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 07:06:13,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:13,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:13,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076932347] [2022-01-10 07:06:13,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076932347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:13,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:13,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:13,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638309513] [2022-01-10 07:06:13,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:13,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:13,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:13,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:13,543 INFO L87 Difference]: Start difference. First operand 1541 states and 2059 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:13,630 INFO L93 Difference]: Finished difference Result 2068 states and 2771 transitions. [2022-01-10 07:06:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:13,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 07:06:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:13,634 INFO L225 Difference]: With dead ends: 2068 [2022-01-10 07:06:13,634 INFO L226 Difference]: Without dead ends: 1547 [2022-01-10 07:06:13,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 07:06:13,636 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 243 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:13,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 808 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-01-10 07:06:13,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1541. [2022-01-10 07:06:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1537 states have (on average 1.324658425504229) internal successors, (2036), 1540 states have internal predecessors, (2036), 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 07:06:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2036 transitions. [2022-01-10 07:06:13,722 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2036 transitions. Word has length 56 [2022-01-10 07:06:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:13,722 INFO L470 AbstractCegarLoop]: Abstraction has 1541 states and 2036 transitions. [2022-01-10 07:06:13,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2036 transitions. [2022-01-10 07:06:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 07:06:13,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:13,723 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] [2022-01-10 07:06:13,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 07:06:13,930 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 07:06:13,931 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1735355720, now seen corresponding path program 1 times [2022-01-10 07:06:13,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:13,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420368936] [2022-01-10 07:06:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:13,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:13,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:13,933 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 07:06:13,934 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 07:06:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:14,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:14,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:14,117 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 07:06:14,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:14,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:14,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420368936] [2022-01-10 07:06:14,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420368936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:14,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:14,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:14,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947172696] [2022-01-10 07:06:14,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:14,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:14,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:14,119 INFO L87 Difference]: Start difference. First operand 1541 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:14,207 INFO L93 Difference]: Finished difference Result 2001 states and 2645 transitions. [2022-01-10 07:06:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:14,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 07:06:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:14,211 INFO L225 Difference]: With dead ends: 2001 [2022-01-10 07:06:14,211 INFO L226 Difference]: Without dead ends: 1504 [2022-01-10 07:06:14,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 07:06:14,212 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 269 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:14,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 616 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-01-10 07:06:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1206. [2022-01-10 07:06:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1202 states have (on average 1.2878535773710482) internal successors, (1548), 1205 states have internal predecessors, (1548), 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 07:06:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1548 transitions. [2022-01-10 07:06:14,275 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1548 transitions. Word has length 56 [2022-01-10 07:06:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:14,275 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1548 transitions. [2022-01-10 07:06:14,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1548 transitions. [2022-01-10 07:06:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 07:06:14,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:14,276 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] [2022-01-10 07:06:14,286 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 07:06:14,487 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 07:06:14,487 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1730559580, now seen corresponding path program 1 times [2022-01-10 07:06:14,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:14,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612748563] [2022-01-10 07:06:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:14,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:14,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:14,489 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 07:06:14,490 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 07:06:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:14,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:14,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:14,668 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 07:06:14,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:14,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:14,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612748563] [2022-01-10 07:06:14,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612748563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:14,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:14,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:14,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395934201] [2022-01-10 07:06:14,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:14,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:14,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:14,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:14,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:14,670 INFO L87 Difference]: Start difference. First operand 1206 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:14,833 INFO L93 Difference]: Finished difference Result 2285 states and 2973 transitions. [2022-01-10 07:06:14,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:14,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 07:06:14,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:14,837 INFO L225 Difference]: With dead ends: 2285 [2022-01-10 07:06:14,837 INFO L226 Difference]: Without dead ends: 1768 [2022-01-10 07:06:14,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 07:06:14,838 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 309 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:14,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 457 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:06:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2022-01-10 07:06:14,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1368. [2022-01-10 07:06:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1364 states have (on average 1.2976539589442815) internal successors, (1770), 1367 states have internal predecessors, (1770), 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 07:06:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1770 transitions. [2022-01-10 07:06:14,924 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1770 transitions. Word has length 56 [2022-01-10 07:06:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:14,925 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1770 transitions. [2022-01-10 07:06:14,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:14,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1770 transitions. [2022-01-10 07:06:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 07:06:14,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:14,926 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] [2022-01-10 07:06:14,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:15,133 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 07:06:15,133 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash -415618313, now seen corresponding path program 1 times [2022-01-10 07:06:15,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:15,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673737422] [2022-01-10 07:06:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:15,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:15,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:15,135 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 07:06:15,136 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 07:06:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:15,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:15,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:15,314 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 07:06:15,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:15,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:15,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673737422] [2022-01-10 07:06:15,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673737422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:15,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:15,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:15,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103589402] [2022-01-10 07:06:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:15,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:15,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:15,315 INFO L87 Difference]: Start difference. First operand 1368 states and 1770 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:15,468 INFO L93 Difference]: Finished difference Result 2483 states and 3262 transitions. [2022-01-10 07:06:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:15,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 07:06:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:15,473 INFO L225 Difference]: With dead ends: 2483 [2022-01-10 07:06:15,473 INFO L226 Difference]: Without dead ends: 1853 [2022-01-10 07:06:15,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 07:06:15,475 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 272 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:15,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 452 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2022-01-10 07:06:15,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1376. [2022-01-10 07:06:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1372 states have (on average 1.3068513119533527) internal successors, (1793), 1375 states have internal predecessors, (1793), 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 07:06:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1793 transitions. [2022-01-10 07:06:15,581 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1793 transitions. Word has length 56 [2022-01-10 07:06:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:15,581 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1793 transitions. [2022-01-10 07:06:15,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:15,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1793 transitions. [2022-01-10 07:06:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 07:06:15,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:15,582 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] [2022-01-10 07:06:15,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 07:06:15,789 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 07:06:15,789 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:15,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1073895861, now seen corresponding path program 1 times [2022-01-10 07:06:15,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:15,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711255678] [2022-01-10 07:06:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:15,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:15,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:15,791 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 07:06:15,793 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 07:06:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:15,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 07:06:15,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:17,352 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 07:06:17,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:17,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:17,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711255678] [2022-01-10 07:06:17,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711255678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:17,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:17,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-10 07:06:17,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828925524] [2022-01-10 07:06:17,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:17,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 07:06:17,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:17,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 07:06:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-01-10 07:06:17,354 INFO L87 Difference]: Start difference. First operand 1376 states and 1793 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 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 07:06:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:17,743 INFO L93 Difference]: Finished difference Result 1986 states and 2599 transitions. [2022-01-10 07:06:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 07:06:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 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 58 [2022-01-10 07:06:17,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:17,747 INFO L225 Difference]: With dead ends: 1986 [2022-01-10 07:06:17,747 INFO L226 Difference]: Without dead ends: 1908 [2022-01-10 07:06:17,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-10 07:06:17,748 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 917 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 876 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:17,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 2813 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 266 Invalid, 0 Unknown, 876 Unchecked, 0.2s Time] [2022-01-10 07:06:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-01-10 07:06:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1383. [2022-01-10 07:06:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1379 states have (on average 1.306744017403916) internal successors, (1802), 1382 states have internal predecessors, (1802), 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 07:06:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1802 transitions. [2022-01-10 07:06:17,875 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1802 transitions. Word has length 58 [2022-01-10 07:06:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:17,875 INFO L470 AbstractCegarLoop]: Abstraction has 1383 states and 1802 transitions. [2022-01-10 07:06:17,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 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 07:06:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1802 transitions. [2022-01-10 07:06:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 07:06:17,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:17,876 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] [2022-01-10 07:06:17,885 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 07:06:18,085 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 07:06:18,086 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1243428052, now seen corresponding path program 1 times [2022-01-10 07:06:18,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:18,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57794117] [2022-01-10 07:06:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:18,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:18,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:18,088 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 07:06:18,088 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 07:06:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:18,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 07:06:18,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:19,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:19,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:19,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57794117] [2022-01-10 07:06:19,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57794117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:19,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:19,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-10 07:06:19,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119055877] [2022-01-10 07:06:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:19,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 07:06:19,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 07:06:19,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 07:06:19,252 INFO L87 Difference]: Start difference. First operand 1383 states and 1802 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 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 07:06:19,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:19,688 INFO L93 Difference]: Finished difference Result 1972 states and 2582 transitions. [2022-01-10 07:06:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 07:06:19,689 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 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 58 [2022-01-10 07:06:19,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:19,692 INFO L225 Difference]: With dead ends: 1972 [2022-01-10 07:06:19,692 INFO L226 Difference]: Without dead ends: 1875 [2022-01-10 07:06:19,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:06:19,693 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 995 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 566 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:19,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 2629 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 369 Invalid, 0 Unknown, 566 Unchecked, 0.3s Time] [2022-01-10 07:06:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2022-01-10 07:06:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1350. [2022-01-10 07:06:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1348 states have (on average 1.3078635014836795) internal successors, (1763), 1349 states have internal predecessors, (1763), 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 07:06:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1763 transitions. [2022-01-10 07:06:19,812 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1763 transitions. Word has length 58 [2022-01-10 07:06:19,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:19,812 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 1763 transitions. [2022-01-10 07:06:19,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 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 07:06:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1763 transitions. [2022-01-10 07:06:19,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 07:06:19,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:19,813 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 07:06:19,822 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 07:06:20,020 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 07:06:20,020 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:20,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1766707224, now seen corresponding path program 1 times [2022-01-10 07:06:20,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:20,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847421757] [2022-01-10 07:06:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:20,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:20,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:20,022 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 07:06:20,023 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 07:06:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 07:06:20,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:21,692 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 07:06:21,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:21,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:21,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847421757] [2022-01-10 07:06:21,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847421757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:21,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:21,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-10 07:06:21,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144104562] [2022-01-10 07:06:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:21,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 07:06:21,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 07:06:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-01-10 07:06:21,694 INFO L87 Difference]: Start difference. First operand 1350 states and 1763 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:06:22,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:22,090 INFO L93 Difference]: Finished difference Result 1942 states and 2546 transitions. [2022-01-10 07:06:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 07:06:22,090 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:06:22,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:22,093 INFO L225 Difference]: With dead ends: 1942 [2022-01-10 07:06:22,093 INFO L226 Difference]: Without dead ends: 1864 [2022-01-10 07:06:22,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-01-10 07:06:22,094 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 999 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 993 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:22,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 2725 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 267 Invalid, 0 Unknown, 993 Unchecked, 0.2s Time] [2022-01-10 07:06:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-01-10 07:06:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1329. [2022-01-10 07:06:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1328 states have (on average 1.3079819277108433) internal successors, (1737), 1328 states have internal predecessors, (1737), 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 07:06:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1737 transitions. [2022-01-10 07:06:22,231 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1737 transitions. Word has length 59 [2022-01-10 07:06:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:22,231 INFO L470 AbstractCegarLoop]: Abstraction has 1329 states and 1737 transitions. [2022-01-10 07:06:22,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:06:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1737 transitions. [2022-01-10 07:06:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:06:22,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:22,233 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 07:06:22,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 07:06:22,433 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 07:06:22,434 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:22,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:22,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1313040017, now seen corresponding path program 1 times [2022-01-10 07:06:22,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:22,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406182638] [2022-01-10 07:06:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:22,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:22,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:22,436 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 07:06:22,436 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 07:06:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:22,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:22,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:22,955 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 07:06:22,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:22,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:22,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406182638] [2022-01-10 07:06:22,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406182638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:22,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:22,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:22,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518113886] [2022-01-10 07:06:22,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:22,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:22,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:22,957 INFO L87 Difference]: Start difference. First operand 1329 states and 1737 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 07:06:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:23,150 INFO L93 Difference]: Finished difference Result 1491 states and 1958 transitions. [2022-01-10 07:06:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:23,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 07:06:23,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:23,152 INFO L225 Difference]: With dead ends: 1491 [2022-01-10 07:06:23,152 INFO L226 Difference]: Without dead ends: 1287 [2022-01-10 07:06:23,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 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 07:06:23,153 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 28 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:23,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 928 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 188 Unchecked, 0.1s Time] [2022-01-10 07:06:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-01-10 07:06:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1287. [2022-01-10 07:06:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1286 states have (on average 1.3087091757387248) internal successors, (1683), 1286 states have internal predecessors, (1683), 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 07:06:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1683 transitions. [2022-01-10 07:06:23,262 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1683 transitions. Word has length 69 [2022-01-10 07:06:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:23,262 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 1683 transitions. [2022-01-10 07:06:23,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 07:06:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1683 transitions. [2022-01-10 07:06:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:06:23,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:23,264 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, 1, 1, 1, 1] [2022-01-10 07:06:23,271 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 07:06:23,471 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 07:06:23,471 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1678644357, now seen corresponding path program 1 times [2022-01-10 07:06:23,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:23,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798217736] [2022-01-10 07:06:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:23,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:23,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:23,473 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 07:06:23,474 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 07:06:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:23,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:23,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:23,776 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 07:06:23,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:23,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:23,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798217736] [2022-01-10 07:06:23,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798217736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:23,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:23,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:23,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782028318] [2022-01-10 07:06:23,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:23,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:23,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:23,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:23,778 INFO L87 Difference]: Start difference. First operand 1287 states and 1683 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 07:06:24,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:24,012 INFO L93 Difference]: Finished difference Result 1438 states and 1884 transitions. [2022-01-10 07:06:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:24,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 07:06:24,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:24,014 INFO L225 Difference]: With dead ends: 1438 [2022-01-10 07:06:24,014 INFO L226 Difference]: Without dead ends: 1280 [2022-01-10 07:06:24,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 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 07:06:24,015 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 16 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:24,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 724 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 102 Unchecked, 0.1s Time] [2022-01-10 07:06:24,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-01-10 07:06:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1280. [2022-01-10 07:06:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1279 states have internal predecessors, (1675), 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 07:06:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1675 transitions. [2022-01-10 07:06:24,134 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1675 transitions. Word has length 69 [2022-01-10 07:06:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:24,134 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1675 transitions. [2022-01-10 07:06:24,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 07:06:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1675 transitions. [2022-01-10 07:06:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:06:24,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:24,135 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 07:06:24,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-01-10 07:06:24,342 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 07:06:24,343 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:24,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1001365175, now seen corresponding path program 1 times [2022-01-10 07:06:24,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:24,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057724620] [2022-01-10 07:06:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:24,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:24,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:24,344 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 07:06:24,346 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 07:06:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:24,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:06:24,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:24,721 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 07:06:24,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:24,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:24,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057724620] [2022-01-10 07:06:24,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057724620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:24,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:24,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:06:24,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166847568] [2022-01-10 07:06:24,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:24,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:06:24,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:06:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:06:24,723 INFO L87 Difference]: Start difference. First operand 1280 states and 1675 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 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 07:06:24,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:24,883 INFO L93 Difference]: Finished difference Result 1447 states and 1901 transitions. [2022-01-10 07:06:24,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:24,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 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 07:06:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:24,886 INFO L225 Difference]: With dead ends: 1447 [2022-01-10 07:06:24,886 INFO L226 Difference]: Without dead ends: 1256 [2022-01-10 07:06:24,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 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 07:06:24,887 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 23 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:24,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 789 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 197 Unchecked, 0.1s Time] [2022-01-10 07:06:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-01-10 07:06:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1256. [2022-01-10 07:06:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 1.3107569721115537) internal successors, (1645), 1255 states have internal predecessors, (1645), 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 07:06:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1645 transitions. [2022-01-10 07:06:24,980 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1645 transitions. Word has length 69 [2022-01-10 07:06:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:24,980 INFO L470 AbstractCegarLoop]: Abstraction has 1256 states and 1645 transitions. [2022-01-10 07:06:24,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 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 07:06:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1645 transitions. [2022-01-10 07:06:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:06:24,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:24,981 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 07:06:24,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 07:06:25,182 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 07:06:25,182 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:25,182 INFO L85 PathProgramCache]: Analyzing trace with hash 670291939, now seen corresponding path program 1 times [2022-01-10 07:06:25,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:25,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947422219] [2022-01-10 07:06:25,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:25,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:25,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:25,184 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 07:06:25,184 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 07:06:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:25,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:25,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:25,736 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 07:06:25,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:25,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:25,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947422219] [2022-01-10 07:06:25,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947422219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:25,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:25,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:25,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159476727] [2022-01-10 07:06:25,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:25,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:25,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:25,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:25,737 INFO L87 Difference]: Start difference. First operand 1256 states and 1645 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 07:06:25,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:25,911 INFO L93 Difference]: Finished difference Result 1418 states and 1866 transitions. [2022-01-10 07:06:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:25,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 07:06:25,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:25,914 INFO L225 Difference]: With dead ends: 1418 [2022-01-10 07:06:25,914 INFO L226 Difference]: Without dead ends: 1240 [2022-01-10 07:06:25,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 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 07:06:25,915 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 26 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:25,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 797 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 116 Unchecked, 0.1s Time] [2022-01-10 07:06:25,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-01-10 07:06:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2022-01-10 07:06:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1239 states have (on average 1.3123486682808716) internal successors, (1626), 1239 states have internal predecessors, (1626), 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 07:06:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1626 transitions. [2022-01-10 07:06:26,006 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1626 transitions. Word has length 69 [2022-01-10 07:06:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:26,006 INFO L470 AbstractCegarLoop]: Abstraction has 1240 states and 1626 transitions. [2022-01-10 07:06:26,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 07:06:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1626 transitions. [2022-01-10 07:06:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:06:26,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:26,008 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 07:06:26,017 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 07:06:26,208 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 07:06:26,208 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:26,209 INFO L85 PathProgramCache]: Analyzing trace with hash -632990983, now seen corresponding path program 1 times [2022-01-10 07:06:26,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:26,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149357386] [2022-01-10 07:06:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:26,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:26,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:26,210 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 07:06:26,211 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 07:06:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:26,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:26,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:26,505 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 07:06:26,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:26,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:26,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149357386] [2022-01-10 07:06:26,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149357386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:26,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:26,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:26,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545071582] [2022-01-10 07:06:26,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:26,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:26,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:26,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:26,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:26,506 INFO L87 Difference]: Start difference. First operand 1240 states and 1626 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 07:06:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:26,699 INFO L93 Difference]: Finished difference Result 1358 states and 1782 transitions. [2022-01-10 07:06:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:26,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 07:06:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:26,701 INFO L225 Difference]: With dead ends: 1358 [2022-01-10 07:06:26,701 INFO L226 Difference]: Without dead ends: 1233 [2022-01-10 07:06:26,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 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 07:06:26,702 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 16 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:26,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 712 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2022-01-10 07:06:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-01-10 07:06:26,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1233. [2022-01-10 07:06:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.3133116883116882) internal successors, (1618), 1232 states have internal predecessors, (1618), 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 07:06:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1618 transitions. [2022-01-10 07:06:26,790 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1618 transitions. Word has length 69 [2022-01-10 07:06:26,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:26,790 INFO L470 AbstractCegarLoop]: Abstraction has 1233 states and 1618 transitions. [2022-01-10 07:06:26,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 07:06:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1618 transitions. [2022-01-10 07:06:26,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:06:26,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:26,792 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] [2022-01-10 07:06:26,800 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 07:06:26,998 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 07:06:26,999 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash 424023830, now seen corresponding path program 1 times [2022-01-10 07:06:26,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:26,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057082919] [2022-01-10 07:06:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:26,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:27,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:27,000 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 07:06:27,001 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 07:06:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:27,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:27,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:27,536 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 07:06:27,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:27,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:27,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057082919] [2022-01-10 07:06:27,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057082919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:27,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:27,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:27,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432267015] [2022-01-10 07:06:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:27,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:27,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:27,538 INFO L87 Difference]: Start difference. First operand 1233 states and 1618 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 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 07:06:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:27,713 INFO L93 Difference]: Finished difference Result 1364 states and 1793 transitions. [2022-01-10 07:06:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:27,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 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 70 [2022-01-10 07:06:27,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:27,715 INFO L225 Difference]: With dead ends: 1364 [2022-01-10 07:06:27,715 INFO L226 Difference]: Without dead ends: 1233 [2022-01-10 07:06:27,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 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 07:06:27,716 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 40 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:27,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 504 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-01-10 07:06:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-01-10 07:06:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1233. [2022-01-10 07:06:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.3125) internal successors, (1617), 1232 states have internal predecessors, (1617), 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 07:06:27,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1617 transitions. [2022-01-10 07:06:27,807 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1617 transitions. Word has length 70 [2022-01-10 07:06:27,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:27,807 INFO L470 AbstractCegarLoop]: Abstraction has 1233 states and 1617 transitions. [2022-01-10 07:06:27,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 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 07:06:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1617 transitions. [2022-01-10 07:06:27,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:06:27,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:27,809 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] [2022-01-10 07:06:27,816 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 07:06:28,016 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 07:06:28,016 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1321457734, now seen corresponding path program 1 times [2022-01-10 07:06:28,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:28,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077718419] [2022-01-10 07:06:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:28,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:28,018 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 07:06:28,018 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 07:06:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:28,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:28,209 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 07:06:28,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:28,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:28,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077718419] [2022-01-10 07:06:28,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077718419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:28,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:28,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:28,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636883023] [2022-01-10 07:06:28,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:28,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:28,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:28,210 INFO L87 Difference]: Start difference. First operand 1233 states and 1617 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 07:06:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:28,384 INFO L93 Difference]: Finished difference Result 2650 states and 3578 transitions. [2022-01-10 07:06:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:28,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-01-10 07:06:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:28,394 INFO L225 Difference]: With dead ends: 2650 [2022-01-10 07:06:28,394 INFO L226 Difference]: Without dead ends: 1801 [2022-01-10 07:06:28,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 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 07:06:28,395 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 152 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:28,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 465 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-01-10 07:06:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1799. [2022-01-10 07:06:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 1.3197997775305896) internal successors, (2373), 1798 states have internal predecessors, (2373), 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 07:06:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2373 transitions. [2022-01-10 07:06:28,543 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2373 transitions. Word has length 70 [2022-01-10 07:06:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:28,543 INFO L470 AbstractCegarLoop]: Abstraction has 1799 states and 2373 transitions. [2022-01-10 07:06:28,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 07:06:28,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2373 transitions. [2022-01-10 07:06:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 07:06:28,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:28,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:06:28,554 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 07:06:28,754 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 07:06:28,754 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1534096323, now seen corresponding path program 1 times [2022-01-10 07:06:28,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:28,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498343853] [2022-01-10 07:06:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:28,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:28,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:28,756 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 07:06:28,756 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 07:06:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:28,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:28,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:28,952 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 07:06:28,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:28,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:28,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498343853] [2022-01-10 07:06:28,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498343853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:28,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:28,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469827051] [2022-01-10 07:06:28,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:28,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:28,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:28,954 INFO L87 Difference]: Start difference. First operand 1799 states and 2373 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 07:06:29,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:29,209 INFO L93 Difference]: Finished difference Result 4259 states and 5773 transitions. [2022-01-10 07:06:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2022-01-10 07:06:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:29,213 INFO L225 Difference]: With dead ends: 4259 [2022-01-10 07:06:29,213 INFO L226 Difference]: Without dead ends: 2855 [2022-01-10 07:06:29,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 07:06:29,215 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 145 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:29,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 467 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2022-01-10 07:06:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2853. [2022-01-10 07:06:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 1.3338008415147264) internal successors, (3804), 2852 states have internal predecessors, (3804), 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 07:06:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3804 transitions. [2022-01-10 07:06:29,483 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3804 transitions. Word has length 71 [2022-01-10 07:06:29,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:29,484 INFO L470 AbstractCegarLoop]: Abstraction has 2853 states and 3804 transitions. [2022-01-10 07:06:29,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 07:06:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3804 transitions. [2022-01-10 07:06:29,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 07:06:29,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:29,499 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] [2022-01-10 07:06:29,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 07:06:29,700 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 07:06:29,700 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:29,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:29,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1447157147, now seen corresponding path program 1 times [2022-01-10 07:06:29,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:29,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904172790] [2022-01-10 07:06:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:29,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:29,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:29,702 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 07:06:29,702 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 07:06:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:29,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:29,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:29,894 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 07:06:29,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:29,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:29,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904172790] [2022-01-10 07:06:29,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904172790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:29,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:29,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:29,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871224670] [2022-01-10 07:06:29,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:29,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:29,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:29,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:29,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:29,895 INFO L87 Difference]: Start difference. First operand 2853 states and 3804 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 07:06:30,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:30,355 INFO L93 Difference]: Finished difference Result 7073 states and 9606 transitions. [2022-01-10 07:06:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:30,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-01-10 07:06:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:30,362 INFO L225 Difference]: With dead ends: 7073 [2022-01-10 07:06:30,362 INFO L226 Difference]: Without dead ends: 4615 [2022-01-10 07:06:30,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 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 07:06:30,365 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 140 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:30,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 445 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2022-01-10 07:06:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 4613. [2022-01-10 07:06:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4613 states, 4612 states have (on average 1.3373807458803122) internal successors, (6168), 4612 states have internal predecessors, (6168), 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 07:06:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 6168 transitions. [2022-01-10 07:06:30,796 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 6168 transitions. Word has length 72 [2022-01-10 07:06:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:30,796 INFO L470 AbstractCegarLoop]: Abstraction has 4613 states and 6168 transitions. [2022-01-10 07:06:30,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 07:06:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 6168 transitions. [2022-01-10 07:06:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 07:06:30,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:30,798 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] [2022-01-10 07:06:30,807 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 07:06:31,004 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 07:06:31,005 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:31,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:31,005 INFO L85 PathProgramCache]: Analyzing trace with hash -427317051, now seen corresponding path program 1 times [2022-01-10 07:06:31,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:31,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399718145] [2022-01-10 07:06:31,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:31,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:31,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:31,006 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 07:06:31,007 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 07:06:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:31,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:31,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:31,449 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 07:06:31,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:31,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:31,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399718145] [2022-01-10 07:06:31,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399718145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:31,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:31,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:31,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900971820] [2022-01-10 07:06:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:31,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:31,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:31,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:31,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:31,451 INFO L87 Difference]: Start difference. First operand 4613 states and 6168 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 07:06:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:31,935 INFO L93 Difference]: Finished difference Result 5482 states and 7340 transitions. [2022-01-10 07:06:31,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:31,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2022-01-10 07:06:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:31,940 INFO L225 Difference]: With dead ends: 5482 [2022-01-10 07:06:31,940 INFO L226 Difference]: Without dead ends: 4612 [2022-01-10 07:06:31,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 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 07:06:31,942 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 37 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:31,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 646 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 108 Unchecked, 0.1s Time] [2022-01-10 07:06:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2022-01-10 07:06:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 4612. [2022-01-10 07:06:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 4611 states have (on average 1.3372370418564303) internal successors, (6166), 4611 states have internal predecessors, (6166), 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 07:06:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6166 transitions. [2022-01-10 07:06:32,368 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6166 transitions. Word has length 75 [2022-01-10 07:06:32,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:32,368 INFO L470 AbstractCegarLoop]: Abstraction has 4612 states and 6166 transitions. [2022-01-10 07:06:32,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 07:06:32,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6166 transitions. [2022-01-10 07:06:32,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 07:06:32,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:32,369 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] [2022-01-10 07:06:32,384 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 07:06:32,577 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 07:06:32,577 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:32,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash 95714880, now seen corresponding path program 1 times [2022-01-10 07:06:32,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:32,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816130639] [2022-01-10 07:06:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:32,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:32,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:32,579 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 07:06:32,580 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 07:06:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:32,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:32,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:33,037 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 07:06:33,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:33,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:33,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816130639] [2022-01-10 07:06:33,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816130639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:33,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:33,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:33,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618385536] [2022-01-10 07:06:33,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:33,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:33,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:33,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:33,039 INFO L87 Difference]: Start difference. First operand 4612 states and 6166 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 07:06:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:34,126 INFO L93 Difference]: Finished difference Result 15011 states and 20275 transitions. [2022-01-10 07:06:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:06:34,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 75 [2022-01-10 07:06:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:34,165 INFO L225 Difference]: With dead ends: 15011 [2022-01-10 07:06:34,165 INFO L226 Difference]: Without dead ends: 10793 [2022-01-10 07:06:34,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:34,170 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 587 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:34,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 582 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:06:34,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10793 states. [2022-01-10 07:06:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10793 to 8909. [2022-01-10 07:06:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8909 states, 8908 states have (on average 1.3107319263583297) internal successors, (11676), 8908 states have internal predecessors, (11676), 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 07:06:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 11676 transitions. [2022-01-10 07:06:35,075 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 11676 transitions. Word has length 75 [2022-01-10 07:06:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:35,075 INFO L470 AbstractCegarLoop]: Abstraction has 8909 states and 11676 transitions. [2022-01-10 07:06:35,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 07:06:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 11676 transitions. [2022-01-10 07:06:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 07:06:35,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:35,077 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] [2022-01-10 07:06:35,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 07:06:35,283 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 07:06:35,284 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash 188224342, now seen corresponding path program 1 times [2022-01-10 07:06:35,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:35,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307624109] [2022-01-10 07:06:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:35,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:35,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:35,286 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 07:06:35,286 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 07:06:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:35,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:06:35,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:35,499 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 07:06:35,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:35,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:35,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307624109] [2022-01-10 07:06:35,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307624109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:35,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:35,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:35,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732078060] [2022-01-10 07:06:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:35,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:35,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:35,503 INFO L87 Difference]: Start difference. First operand 8909 states and 11676 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 07:06:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:37,545 INFO L93 Difference]: Finished difference Result 19037 states and 24600 transitions. [2022-01-10 07:06:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:37,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2022-01-10 07:06:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:37,568 INFO L225 Difference]: With dead ends: 19037 [2022-01-10 07:06:37,568 INFO L226 Difference]: Without dead ends: 19035 [2022-01-10 07:06:37,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 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 07:06:37,573 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 348 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:37,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 958 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:37,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19035 states. [2022-01-10 07:06:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19035 to 9821. [2022-01-10 07:06:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9821 states, 9820 states have (on average 1.2818737270875764) internal successors, (12588), 9820 states have internal predecessors, (12588), 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 07:06:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9821 states to 9821 states and 12588 transitions. [2022-01-10 07:06:38,817 INFO L78 Accepts]: Start accepts. Automaton has 9821 states and 12588 transitions. Word has length 76 [2022-01-10 07:06:38,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:38,818 INFO L470 AbstractCegarLoop]: Abstraction has 9821 states and 12588 transitions. [2022-01-10 07:06:38,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 07:06:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 9821 states and 12588 transitions. [2022-01-10 07:06:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:06:38,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:38,819 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] [2022-01-10 07:06:38,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:39,026 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 07:06:39,026 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -181189212, now seen corresponding path program 1 times [2022-01-10 07:06:39,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:39,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461886173] [2022-01-10 07:06:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:39,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:39,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:39,032 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 07:06:39,032 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 07:06:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:39,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:06:39,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:39,400 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 07:06:39,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:39,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:39,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461886173] [2022-01-10 07:06:39,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461886173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:39,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:39,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:39,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830896042] [2022-01-10 07:06:39,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:39,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:06:39,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:06:39,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:06:39,403 INFO L87 Difference]: Start difference. First operand 9821 states and 12588 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 07:06:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:40,543 INFO L93 Difference]: Finished difference Result 19412 states and 24932 transitions. [2022-01-10 07:06:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:06:40,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2022-01-10 07:06:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:40,556 INFO L225 Difference]: With dead ends: 19412 [2022-01-10 07:06:40,557 INFO L226 Difference]: Without dead ends: 10066 [2022-01-10 07:06:40,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 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 07:06:40,566 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 121 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:40,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 594 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-01-10 07:06:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10066 states. [2022-01-10 07:06:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10066 to 10066. [2022-01-10 07:06:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10066 states, 10065 states have (on average 1.2776949826130155) internal successors, (12860), 10065 states have internal predecessors, (12860), 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 07:06:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 12860 transitions. [2022-01-10 07:06:41,827 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 12860 transitions. Word has length 77 [2022-01-10 07:06:41,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:41,827 INFO L470 AbstractCegarLoop]: Abstraction has 10066 states and 12860 transitions. [2022-01-10 07:06:41,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 07:06:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 12860 transitions. [2022-01-10 07:06:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:06:41,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:41,828 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] [2022-01-10 07:06:41,837 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 07:06:42,029 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 07:06:42,029 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1756244585, now seen corresponding path program 1 times [2022-01-10 07:06:42,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:42,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097801028] [2022-01-10 07:06:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:42,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:42,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:42,032 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 07:06:42,032 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 07:06:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:42,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:42,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:42,302 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 07:06:42,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:42,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:42,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097801028] [2022-01-10 07:06:42,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097801028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:42,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:42,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:42,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070945238] [2022-01-10 07:06:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:42,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:42,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:42,304 INFO L87 Difference]: Start difference. First operand 10066 states and 12860 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 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 07:06:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:44,372 INFO L93 Difference]: Finished difference Result 20636 states and 26226 transitions. [2022-01-10 07:06:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-01-10 07:06:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:44,395 INFO L225 Difference]: With dead ends: 20636 [2022-01-10 07:06:44,395 INFO L226 Difference]: Without dead ends: 15554 [2022-01-10 07:06:44,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:06:44,403 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 975 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:44,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 585 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:06:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15554 states. [2022-01-10 07:06:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15554 to 9973. [2022-01-10 07:06:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9973 states, 9972 states have (on average 1.2782791817087846) internal successors, (12747), 9972 states have internal predecessors, (12747), 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 07:06:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9973 states to 9973 states and 12747 transitions. [2022-01-10 07:06:45,609 INFO L78 Accepts]: Start accepts. Automaton has 9973 states and 12747 transitions. Word has length 77 [2022-01-10 07:06:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:45,609 INFO L470 AbstractCegarLoop]: Abstraction has 9973 states and 12747 transitions. [2022-01-10 07:06:45,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 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 07:06:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 9973 states and 12747 transitions. [2022-01-10 07:06:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:06:45,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:45,610 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] [2022-01-10 07:06:45,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:45,810 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 07:06:45,811 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash -577769717, now seen corresponding path program 1 times [2022-01-10 07:06:45,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:45,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678103056] [2022-01-10 07:06:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:45,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:45,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:45,813 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 07:06:45,814 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 07:06:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:45,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:45,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:46,407 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 07:06:46,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:46,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678103056] [2022-01-10 07:06:46,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678103056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:46,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:46,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:46,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100002453] [2022-01-10 07:06:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:46,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:46,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:46,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:46,409 INFO L87 Difference]: Start difference. First operand 9973 states and 12747 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 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 07:06:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:47,601 INFO L93 Difference]: Finished difference Result 10483 states and 13424 transitions. [2022-01-10 07:06:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 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 79 [2022-01-10 07:06:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:47,611 INFO L225 Difference]: With dead ends: 10483 [2022-01-10 07:06:47,611 INFO L226 Difference]: Without dead ends: 9959 [2022-01-10 07:06:47,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:47,614 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 32 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:47,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 904 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 263 Unchecked, 0.0s Time] [2022-01-10 07:06:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9959 states. [2022-01-10 07:06:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9959 to 9959. [2022-01-10 07:06:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9959 states, 9958 states have (on average 1.2784695722032537) internal successors, (12731), 9958 states have internal predecessors, (12731), 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 07:06:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9959 states to 9959 states and 12731 transitions. [2022-01-10 07:06:48,808 INFO L78 Accepts]: Start accepts. Automaton has 9959 states and 12731 transitions. Word has length 79 [2022-01-10 07:06:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:48,809 INFO L470 AbstractCegarLoop]: Abstraction has 9959 states and 12731 transitions. [2022-01-10 07:06:48,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 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 07:06:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 9959 states and 12731 transitions. [2022-01-10 07:06:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:06:48,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:48,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:48,819 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 07:06:49,016 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 07:06:49,017 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:49,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1154540417, now seen corresponding path program 1 times [2022-01-10 07:06:49,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:49,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508776146] [2022-01-10 07:06:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:49,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:49,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:49,019 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 07:06:49,020 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 07:06:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:49,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:06:49,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:49,423 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 07:06:49,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:49,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:49,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508776146] [2022-01-10 07:06:49,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508776146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:49,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:49,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:06:49,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494765979] [2022-01-10 07:06:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:49,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:06:49,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:06:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:06:49,425 INFO L87 Difference]: Start difference. First operand 9959 states and 12731 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 07:06:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:50,625 INFO L93 Difference]: Finished difference Result 11000 states and 14077 transitions. [2022-01-10 07:06:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:50,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 79 [2022-01-10 07:06:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:50,636 INFO L225 Difference]: With dead ends: 11000 [2022-01-10 07:06:50,636 INFO L226 Difference]: Without dead ends: 9932 [2022-01-10 07:06:50,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 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 07:06:50,639 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 21 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:50,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 871 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 188 Unchecked, 0.1s Time] [2022-01-10 07:06:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2022-01-10 07:06:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 9932. [2022-01-10 07:06:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9932 states, 9931 states have (on average 1.2788238848051556) internal successors, (12700), 9931 states have internal predecessors, (12700), 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 07:06:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 12700 transitions. [2022-01-10 07:06:51,784 INFO L78 Accepts]: Start accepts. Automaton has 9932 states and 12700 transitions. Word has length 79 [2022-01-10 07:06:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:51,784 INFO L470 AbstractCegarLoop]: Abstraction has 9932 states and 12700 transitions. [2022-01-10 07:06:51,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 07:06:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 9932 states and 12700 transitions. [2022-01-10 07:06:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:06:51,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:51,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:06:51,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:51,986 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 07:06:51,986 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:51,986 INFO L85 PathProgramCache]: Analyzing trace with hash -475116372, now seen corresponding path program 1 times [2022-01-10 07:06:51,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:51,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738862228] [2022-01-10 07:06:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:51,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:51,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:51,988 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 07:06:51,988 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 07:06:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:52,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:52,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:52,439 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 07:06:52,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:52,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:52,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738862228] [2022-01-10 07:06:52,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738862228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:52,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:52,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:52,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715994575] [2022-01-10 07:06:52,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:52,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:52,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:52,440 INFO L87 Difference]: Start difference. First operand 9932 states and 12700 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 07:06:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:53,598 INFO L93 Difference]: Finished difference Result 10445 states and 13380 transitions. [2022-01-10 07:06:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:53,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2022-01-10 07:06:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:53,609 INFO L225 Difference]: With dead ends: 10445 [2022-01-10 07:06:53,610 INFO L226 Difference]: Without dead ends: 9931 [2022-01-10 07:06:53,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 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 07:06:53,612 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 55 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:53,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 407 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-01-10 07:06:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9931 states. [2022-01-10 07:06:54,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9931 to 9931. [2022-01-10 07:06:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9931 states, 9930 states have (on average 1.2787512588116818) internal successors, (12698), 9930 states have internal predecessors, (12698), 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 07:06:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9931 states to 9931 states and 12698 transitions. [2022-01-10 07:06:54,753 INFO L78 Accepts]: Start accepts. Automaton has 9931 states and 12698 transitions. Word has length 80 [2022-01-10 07:06:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:54,753 INFO L470 AbstractCegarLoop]: Abstraction has 9931 states and 12698 transitions. [2022-01-10 07:06:54,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 07:06:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9931 states and 12698 transitions. [2022-01-10 07:06:54,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:06:54,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:54,755 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] [2022-01-10 07:06:54,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 07:06:54,955 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 07:06:54,955 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash -352604313, now seen corresponding path program 1 times [2022-01-10 07:06:54,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:54,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543459099] [2022-01-10 07:06:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:54,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:54,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:54,957 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 07:06:54,958 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 07:06:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:55,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:55,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:55,437 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 07:06:55,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:55,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:55,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543459099] [2022-01-10 07:06:55,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543459099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:55,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:55,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:55,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237466533] [2022-01-10 07:06:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:55,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:55,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:55,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:55,438 INFO L87 Difference]: Start difference. First operand 9931 states and 12698 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 07:06:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:56,722 INFO L93 Difference]: Finished difference Result 12046 states and 15427 transitions. [2022-01-10 07:06:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2022-01-10 07:06:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:56,734 INFO L225 Difference]: With dead ends: 12046 [2022-01-10 07:06:56,734 INFO L226 Difference]: Without dead ends: 11002 [2022-01-10 07:06:56,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 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 07:06:56,738 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 278 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:56,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 571 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 131 Unchecked, 0.1s Time] [2022-01-10 07:06:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2022-01-10 07:06:57,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 10998. [2022-01-10 07:06:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10998 states, 10997 states have (on average 1.2783486405383286) internal successors, (14058), 10997 states have internal predecessors, (14058), 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 07:06:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10998 states to 10998 states and 14058 transitions. [2022-01-10 07:06:58,007 INFO L78 Accepts]: Start accepts. Automaton has 10998 states and 14058 transitions. Word has length 80 [2022-01-10 07:06:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:58,008 INFO L470 AbstractCegarLoop]: Abstraction has 10998 states and 14058 transitions. [2022-01-10 07:06:58,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 07:06:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 10998 states and 14058 transitions. [2022-01-10 07:06:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:06:58,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:58,009 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] [2022-01-10 07:06:58,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-01-10 07:06:58,209 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 07:06:58,210 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1273560354, now seen corresponding path program 1 times [2022-01-10 07:06:58,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:58,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731841533] [2022-01-10 07:06:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:58,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:58,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:58,211 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 07:06:58,213 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 07:06:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:58,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:58,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:58,630 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 07:06:58,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:58,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:58,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731841533] [2022-01-10 07:06:58,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731841533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:58,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:58,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:58,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244945053] [2022-01-10 07:06:58,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:58,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:58,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:58,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:58,631 INFO L87 Difference]: Start difference. First operand 10998 states and 14058 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 07:07:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:00,210 INFO L93 Difference]: Finished difference Result 16044 states and 20753 transitions. [2022-01-10 07:07:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:00,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 80 [2022-01-10 07:07:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:00,224 INFO L225 Difference]: With dead ends: 16044 [2022-01-10 07:07:00,224 INFO L226 Difference]: Without dead ends: 12434 [2022-01-10 07:07:00,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:00,229 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 398 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:00,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 833 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:07:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12434 states. [2022-01-10 07:07:01,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12434 to 11654. [2022-01-10 07:07:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11654 states, 11653 states have (on average 1.2712606195829401) internal successors, (14814), 11653 states have internal predecessors, (14814), 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 07:07:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11654 states to 11654 states and 14814 transitions. [2022-01-10 07:07:01,592 INFO L78 Accepts]: Start accepts. Automaton has 11654 states and 14814 transitions. Word has length 80 [2022-01-10 07:07:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:01,592 INFO L470 AbstractCegarLoop]: Abstraction has 11654 states and 14814 transitions. [2022-01-10 07:07:01,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 07:07:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 11654 states and 14814 transitions. [2022-01-10 07:07:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:07:01,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:01,594 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] [2022-01-10 07:07:01,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-01-10 07:07:01,794 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 07:07:01,794 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:01,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1626278006, now seen corresponding path program 1 times [2022-01-10 07:07:01,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:01,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114660456] [2022-01-10 07:07:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:01,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:01,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:01,797 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 07:07:01,797 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 07:07:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:01,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:01,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:02,233 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 07:07:02,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:02,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:02,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114660456] [2022-01-10 07:07:02,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114660456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:02,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:02,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:02,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012171207] [2022-01-10 07:07:02,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:02,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:02,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:02,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:02,235 INFO L87 Difference]: Start difference. First operand 11654 states and 14814 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 07:07:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:03,728 INFO L93 Difference]: Finished difference Result 13811 states and 17587 transitions. [2022-01-10 07:07:03,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:03,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2022-01-10 07:07:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:03,746 INFO L225 Difference]: With dead ends: 13811 [2022-01-10 07:07:03,746 INFO L226 Difference]: Without dead ends: 12745 [2022-01-10 07:07:03,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 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 07:07:03,752 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 308 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:03,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 548 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 141 Unchecked, 0.1s Time] [2022-01-10 07:07:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12745 states. [2022-01-10 07:07:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12745 to 11681. [2022-01-10 07:07:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11681 states, 11680 states have (on average 1.2706335616438356) internal successors, (14841), 11680 states have internal predecessors, (14841), 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 07:07:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11681 states to 11681 states and 14841 transitions. [2022-01-10 07:07:05,176 INFO L78 Accepts]: Start accepts. Automaton has 11681 states and 14841 transitions. Word has length 80 [2022-01-10 07:07:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:05,177 INFO L470 AbstractCegarLoop]: Abstraction has 11681 states and 14841 transitions. [2022-01-10 07:07:05,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 07:07:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 11681 states and 14841 transitions. [2022-01-10 07:07:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:07:05,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:05,178 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] [2022-01-10 07:07:05,185 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 07:07:05,378 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 07:07:05,379 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1748790065, now seen corresponding path program 1 times [2022-01-10 07:07:05,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:05,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798097401] [2022-01-10 07:07:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:05,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:05,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:05,381 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 07:07:05,381 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 07:07:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:05,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:05,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:05,796 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 07:07:05,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:05,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:05,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798097401] [2022-01-10 07:07:05,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798097401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:05,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:05,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:05,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038962468] [2022-01-10 07:07:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:05,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:05,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:05,797 INFO L87 Difference]: Start difference. First operand 11681 states and 14841 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 07:07:07,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:07,461 INFO L93 Difference]: Finished difference Result 16727 states and 21536 transitions. [2022-01-10 07:07:07,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:07,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 80 [2022-01-10 07:07:07,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:07,479 INFO L225 Difference]: With dead ends: 16727 [2022-01-10 07:07:07,479 INFO L226 Difference]: Without dead ends: 13117 [2022-01-10 07:07:07,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:07,486 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 590 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:07,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 761 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:07:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13117 states. [2022-01-10 07:07:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13117 to 12337. [2022-01-10 07:07:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12337 states, 12336 states have (on average 1.2643482490272373) internal successors, (15597), 12336 states have internal predecessors, (15597), 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 07:07:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12337 states to 12337 states and 15597 transitions. [2022-01-10 07:07:09,000 INFO L78 Accepts]: Start accepts. Automaton has 12337 states and 15597 transitions. Word has length 80 [2022-01-10 07:07:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:09,000 INFO L470 AbstractCegarLoop]: Abstraction has 12337 states and 15597 transitions. [2022-01-10 07:07:09,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 07:07:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 12337 states and 15597 transitions. [2022-01-10 07:07:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:07:09,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:09,002 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] [2022-01-10 07:07:09,011 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 07:07:09,202 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 07:07:09,202 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1398490246, now seen corresponding path program 1 times [2022-01-10 07:07:09,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:09,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704195971] [2022-01-10 07:07:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:09,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:09,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:09,204 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 07:07:09,204 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 07:07:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:09,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:09,325 INFO L286 TraceCheckSpWp]: Computing forward predicates...