/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:15:55,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:15:55,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:15:55,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:15:55,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:15:55,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:15:55,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:15:55,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:15:55,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:15:55,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:15:55,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:15:55,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:15:55,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:15:55,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:15:55,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:15:55,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:15:55,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:15:55,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:15:55,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:15:55,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:15:55,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:15:55,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:15:55,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:15:55,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:15:55,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:15:55,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:15:55,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:15:55,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:15:55,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:15:55,647 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:15:55,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:15:55,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:15:55,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:15:55,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:15:55,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:15:55,649 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:15:55,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:15:55,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:15:55,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:15:55,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:15:55,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:15:55,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:15:55,650 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:15:55,650 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:15:55,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:15:55,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:15:55,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:15:55,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:15:55,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:15:55,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:15:55,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:15:55,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:15:55,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:15:55,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:15:55,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:15:55,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:15:55,652 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:15:55,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:15:55,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:15:55,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:15:55,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:15:55,653 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:15:55,653 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:15:55,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:15:55,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:15:55,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:15:55,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:15:55,863 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:15:55,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:15:55,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f9d3246/f453c19083dd4265b8f0b0409b353c3b/FLAG0e890b61d [2022-01-10 13:15:56,264 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:15:56,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:15:56,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f9d3246/f453c19083dd4265b8f0b0409b353c3b/FLAG0e890b61d [2022-01-10 13:15:56,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f9d3246/f453c19083dd4265b8f0b0409b353c3b [2022-01-10 13:15:56,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:15:56,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:15:56,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:15:56,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:15:56,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:15:56,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:15:56" (1/1) ... [2022-01-10 13:15:56,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a164d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:56, skipping insertion in model container [2022-01-10 13:15:56,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:15:56" (1/1) ... [2022-01-10 13:15:56,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:15:56,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:15:56,980 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.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10376,10389] [2022-01-10 13:15:57,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:15:57,055 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:15:57,115 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.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10376,10389] [2022-01-10 13:15:57,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:15:57,161 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:15:57,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57 WrapperNode [2022-01-10 13:15:57,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:15:57,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:15:57,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:15:57,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:15:57,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,225 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 807 [2022-01-10 13:15:57,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:15:57,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:15:57,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:15:57,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:15:57,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:15:57,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:15:57,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:15:57,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:15:57,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (1/1) ... [2022-01-10 13:15:57,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:15:57,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:15:57,324 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 13:15:57,326 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 13:15:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:15:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:15:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:15:57,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:15:57,452 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:15:57,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:15:58,031 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:15:58,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:15:58,038 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:15:58,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:15:58 BoogieIcfgContainer [2022-01-10 13:15:58,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:15:58,040 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:15:58,040 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:15:58,041 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:15:58,043 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:15:58" (1/1) ... [2022-01-10 13:15:58,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:15:58 BasicIcfg [2022-01-10 13:15:58,569 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:15:58,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:15:58,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:15:58,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:15:58,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:15:56" (1/4) ... [2022-01-10 13:15:58,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f145d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:15:58, skipping insertion in model container [2022-01-10 13:15:58,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:15:57" (2/4) ... [2022-01-10 13:15:58,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f145d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:15:58, skipping insertion in model container [2022-01-10 13:15:58,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:15:58" (3/4) ... [2022-01-10 13:15:58,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f145d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:15:58, skipping insertion in model container [2022-01-10 13:15:58,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:15:58" (4/4) ... [2022-01-10 13:15:58,575 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:15:58,581 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:15:58,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:15:58,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:15:58,626 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 13:15:58,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:15:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:15:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 13:15:58,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:15:58,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:15:58,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:15:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:15:58,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1095767728, now seen corresponding path program 1 times [2022-01-10 13:15:58,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:15:58,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137061630] [2022-01-10 13:15:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:15:58,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:15:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:15:59,341 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 13:15:59,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:15:59,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137061630] [2022-01-10 13:15:59,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137061630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:15:59,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:15:59,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:15:59,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829731761] [2022-01-10 13:15:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:15:59,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:15:59,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:15:59,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:15:59,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:15:59,374 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 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 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:00,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:01,008 INFO L93 Difference]: Finished difference Result 391 states and 653 transitions. [2022-01-10 13:16:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:16:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 13:16:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:01,022 INFO L225 Difference]: With dead ends: 391 [2022-01-10 13:16:01,022 INFO L226 Difference]: Without dead ends: 301 [2022-01-10 13:16:01,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:16:01,025 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 153 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:01,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 739 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 13:16:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-01-10 13:16:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2022-01-10 13:16:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4463087248322148) internal successors, (431), 298 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 431 transitions. [2022-01-10 13:16:01,136 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 431 transitions. Word has length 107 [2022-01-10 13:16:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:01,137 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 431 transitions. [2022-01-10 13:16:01,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 431 transitions. [2022-01-10 13:16:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 13:16:01,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:01,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:01,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:16:01,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:01,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1717583791, now seen corresponding path program 1 times [2022-01-10 13:16:01,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:01,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129777000] [2022-01-10 13:16:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:01,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:01,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:01,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129777000] [2022-01-10 13:16:01,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129777000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:01,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:01,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:16:01,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312389466] [2022-01-10 13:16:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:01,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:16:01,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:01,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:16:01,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:16:01,775 INFO L87 Difference]: Start difference. First operand 299 states and 431 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:05,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:08,777 INFO L93 Difference]: Finished difference Result 1790 states and 2765 transitions. [2022-01-10 13:16:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:16:08,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 13:16:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:08,803 INFO L225 Difference]: With dead ends: 1790 [2022-01-10 13:16:08,803 INFO L226 Difference]: Without dead ends: 1551 [2022-01-10 13:16:08,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:16:08,809 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2522 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2522 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:08,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2522 Valid, 1299 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 919 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 13:16:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-01-10 13:16:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 712. [2022-01-10 13:16:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.5091420534458508) internal successors, (1073), 711 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1073 transitions. [2022-01-10 13:16:08,982 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1073 transitions. Word has length 109 [2022-01-10 13:16:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:08,982 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1073 transitions. [2022-01-10 13:16:08,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1073 transitions. [2022-01-10 13:16:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 13:16:08,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:08,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:08,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:16:08,985 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash 910655296, now seen corresponding path program 1 times [2022-01-10 13:16:08,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:08,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901099843] [2022-01-10 13:16:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:08,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:09,496 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 13:16:09,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:09,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901099843] [2022-01-10 13:16:09,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901099843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:09,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:09,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:16:09,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981498404] [2022-01-10 13:16:09,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:09,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:16:09,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:16:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:16:09,498 INFO L87 Difference]: Start difference. First operand 712 states and 1073 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:12,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:14,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:19,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:21,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:23,301 INFO L93 Difference]: Finished difference Result 3942 states and 6148 transitions. [2022-01-10 13:16:23,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:16:23,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 13:16:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:23,313 INFO L225 Difference]: With dead ends: 3942 [2022-01-10 13:16:23,313 INFO L226 Difference]: Without dead ends: 3385 [2022-01-10 13:16:23,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:16:23,317 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 1293 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 14 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:23,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 2026 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 887 Invalid, 4 Unknown, 0 Unchecked, 12.2s Time] [2022-01-10 13:16:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2022-01-10 13:16:24,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 2103. [2022-01-10 13:16:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 1.5528068506184587) internal successors, (3264), 2102 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3264 transitions. [2022-01-10 13:16:24,044 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3264 transitions. Word has length 110 [2022-01-10 13:16:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:24,044 INFO L470 AbstractCegarLoop]: Abstraction has 2103 states and 3264 transitions. [2022-01-10 13:16:24,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:24,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3264 transitions. [2022-01-10 13:16:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 13:16:24,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:24,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:24,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:16:24,046 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:24,046 INFO L85 PathProgramCache]: Analyzing trace with hash -216123199, now seen corresponding path program 1 times [2022-01-10 13:16:24,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:24,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213244172] [2022-01-10 13:16:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:24,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:24,506 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 13:16:24,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:24,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213244172] [2022-01-10 13:16:24,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213244172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:24,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:24,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:16:24,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645855789] [2022-01-10 13:16:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:24,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:16:24,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:24,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:16:24,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:16:24,514 INFO L87 Difference]: Start difference. First operand 2103 states and 3264 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:28,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:33,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:33,658 INFO L93 Difference]: Finished difference Result 8483 states and 13342 transitions. [2022-01-10 13:16:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:16:33,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 13:16:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:33,685 INFO L225 Difference]: With dead ends: 8483 [2022-01-10 13:16:33,686 INFO L226 Difference]: Without dead ends: 6581 [2022-01-10 13:16:33,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:16:33,688 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 2827 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2827 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:33,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2827 Valid, 1128 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 823 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-01-10 13:16:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2022-01-10 13:16:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 2170. [2022-01-10 13:16:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2169 states have (on average 1.5481788842784694) internal successors, (3358), 2169 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3358 transitions. [2022-01-10 13:16:34,645 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3358 transitions. Word has length 110 [2022-01-10 13:16:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:34,646 INFO L470 AbstractCegarLoop]: Abstraction has 2170 states and 3358 transitions. [2022-01-10 13:16:34,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3358 transitions. [2022-01-10 13:16:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 13:16:34,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:34,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:34,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:16:34,648 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash -998403152, now seen corresponding path program 1 times [2022-01-10 13:16:34,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42062241] [2022-01-10 13:16:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:34,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:35,062 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 13:16:35,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:35,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42062241] [2022-01-10 13:16:35,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42062241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:35,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:35,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:16:35,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064030601] [2022-01-10 13:16:35,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:35,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:16:35,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:16:35,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:16:35,064 INFO L87 Difference]: Start difference. First operand 2170 states and 3358 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:37,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:39,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:50,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:50,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:50,659 INFO L93 Difference]: Finished difference Result 11811 states and 18513 transitions. [2022-01-10 13:16:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:16:50,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 13:16:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:50,688 INFO L225 Difference]: With dead ends: 11811 [2022-01-10 13:16:50,688 INFO L226 Difference]: Without dead ends: 9982 [2022-01-10 13:16:50,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:16:50,720 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 1714 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:50,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1714 Valid, 1838 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 947 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2022-01-10 13:16:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9982 states. [2022-01-10 13:16:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9982 to 5450. [2022-01-10 13:16:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5449 states have (on average 1.5588181317672967) internal successors, (8494), 5449 states have internal predecessors, (8494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 8494 transitions. [2022-01-10 13:16:53,706 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 8494 transitions. Word has length 111 [2022-01-10 13:16:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:53,706 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 8494 transitions. [2022-01-10 13:16:53,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:53,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 8494 transitions. [2022-01-10 13:16:53,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 13:16:53,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:53,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:53,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:16:53,711 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1095280750, now seen corresponding path program 1 times [2022-01-10 13:16:53,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:53,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482450487] [2022-01-10 13:16:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:53,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:54,085 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 13:16:54,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:54,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482450487] [2022-01-10 13:16:54,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482450487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:54,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:54,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:16:54,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109996536] [2022-01-10 13:16:54,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:54,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:16:54,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:54,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:16:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:16:54,087 INFO L87 Difference]: Start difference. First operand 5450 states and 8494 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:16:56,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:58,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []