/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_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:17:06,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:17:06,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:17:06,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:17:06,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:17:06,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:17:06,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:17:06,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:17:06,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:17:06,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:17:06,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:17:06,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:17:06,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:17:06,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:17:06,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:17:06,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:17:06,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:17:06,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:17:06,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:17:06,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:17:06,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:17:06,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:17:06,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:17:06,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:17:06,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:17:06,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:17:06,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:17:06,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:17:06,144 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 13:17:06,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:17:06,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:17:06,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:17:06,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:17:06,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:17:06,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:17:06,191 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:17:06,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:17:06,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:17:06,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:17:06,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:17:06,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:17:06,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:17:06,194 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:17:06,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:17:06,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:17:06,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:17:06,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:17:06,426 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:17:06,427 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:17:06,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 13:17:06,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d32efe7f/4fd2e8b51a0e4b9ca33f3ee5a15cbd67/FLAGee7257467 [2022-01-10 13:17:06,772 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:17:06,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 13:17:06,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d32efe7f/4fd2e8b51a0e4b9ca33f3ee5a15cbd67/FLAGee7257467 [2022-01-10 13:17:07,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d32efe7f/4fd2e8b51a0e4b9ca33f3ee5a15cbd67 [2022-01-10 13:17:07,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:17:07,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:17:07,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:17:07,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:17:07,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:17:07,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f55fc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07, skipping insertion in model container [2022-01-10 13:17:07,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:17:07,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:17:07,459 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_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2022-01-10 13:17:07,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:17:07,516 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:17:07,558 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_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2022-01-10 13:17:07,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:17:07,581 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:17:07,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07 WrapperNode [2022-01-10 13:17:07,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:17:07,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:17:07,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:17:07,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:17:07,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,634 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 615 [2022-01-10 13:17:07,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:17:07,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:17:07,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:17:07,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:17:07,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:17:07,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:17:07,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:17:07,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:17:07,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (1/1) ... [2022-01-10 13:17:07,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:17:07,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:17:07,701 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 13:17:07,702 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 13:17:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:17:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:17:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:17:07,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:17:07,796 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:17:07,797 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:17:08,271 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:17:08,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:17:08,277 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:17:08,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:17:08 BoogieIcfgContainer [2022-01-10 13:17:08,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:17:08,279 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:17:08,279 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:17:08,280 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:17:08,282 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:17:08" (1/1) ... [2022-01-10 13:17:08,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:17:08 BasicIcfg [2022-01-10 13:17:08,574 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:17:08,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:17:08,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:17:08,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:17:08,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:17:07" (1/4) ... [2022-01-10 13:17:08,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e495155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:17:08, skipping insertion in model container [2022-01-10 13:17:08,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:07" (2/4) ... [2022-01-10 13:17:08,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e495155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:17:08, skipping insertion in model container [2022-01-10 13:17:08,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:17:08" (3/4) ... [2022-01-10 13:17:08,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e495155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:17:08, skipping insertion in model container [2022-01-10 13:17:08,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:17:08" (4/4) ... [2022-01-10 13:17:08,600 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 13:17:08,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:17:08,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:17:08,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:17:08,649 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 13:17:08,650 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:17:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 13:17:08,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:08,673 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] [2022-01-10 13:17:08,674 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:08,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:08,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1733086145, now seen corresponding path program 1 times [2022-01-10 13:17:08,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:08,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320104255] [2022-01-10 13:17:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:08,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:09,174 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 13:17:09,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:09,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320104255] [2022-01-10 13:17:09,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320104255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:09,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:09,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:09,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693665844] [2022-01-10 13:17:09,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:09,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:09,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:09,209 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 0 states have call successors, (0), 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 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:09,358 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2022-01-10 13:17:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:09,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 13:17:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:09,367 INFO L225 Difference]: With dead ends: 323 [2022-01-10 13:17:09,367 INFO L226 Difference]: Without dead ends: 225 [2022-01-10 13:17:09,369 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 13:17:09,371 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:09,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 448 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:17:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-10 13:17:09,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2022-01-10 13:17:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.572072072072072) internal successors, (349), 222 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 349 transitions. [2022-01-10 13:17:09,428 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 349 transitions. Word has length 62 [2022-01-10 13:17:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:09,429 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 349 transitions. [2022-01-10 13:17:09,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 349 transitions. [2022-01-10 13:17:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 13:17:09,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:09,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:09,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:17:09,431 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:09,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:09,432 INFO L85 PathProgramCache]: Analyzing trace with hash -994188472, now seen corresponding path program 1 times [2022-01-10 13:17:09,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:09,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332653787] [2022-01-10 13:17:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:09,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:09,568 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 13:17:09,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:09,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332653787] [2022-01-10 13:17:09,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332653787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:09,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:09,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:09,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401915853] [2022-01-10 13:17:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:09,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:09,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:09,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:09,573 INFO L87 Difference]: Start difference. First operand 223 states and 349 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:09,649 INFO L93 Difference]: Finished difference Result 626 states and 974 transitions. [2022-01-10 13:17:09,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:09,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 13:17:09,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:09,652 INFO L225 Difference]: With dead ends: 626 [2022-01-10 13:17:09,681 INFO L226 Difference]: Without dead ends: 428 [2022-01-10 13:17:09,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:09,684 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 581 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:09,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 424 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-10 13:17:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2022-01-10 13:17:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.5576470588235294) internal successors, (662), 425 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 662 transitions. [2022-01-10 13:17:09,717 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 662 transitions. Word has length 64 [2022-01-10 13:17:09,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:09,718 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 662 transitions. [2022-01-10 13:17:09,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 662 transitions. [2022-01-10 13:17:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:17:09,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:09,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:09,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:17:09,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:09,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:09,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2113512833, now seen corresponding path program 1 times [2022-01-10 13:17:09,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:09,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90653041] [2022-01-10 13:17:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:09,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:09,823 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 13:17:09,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:09,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90653041] [2022-01-10 13:17:09,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90653041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:09,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:09,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:09,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329144942] [2022-01-10 13:17:09,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:09,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:09,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:09,826 INFO L87 Difference]: Start difference. First operand 426 states and 662 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:09,864 INFO L93 Difference]: Finished difference Result 896 states and 1442 transitions. [2022-01-10 13:17:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 13:17:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:09,868 INFO L225 Difference]: With dead ends: 896 [2022-01-10 13:17:09,868 INFO L226 Difference]: Without dead ends: 578 [2022-01-10 13:17:09,872 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 13:17:09,875 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 137 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:09,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 522 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-10 13:17:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 566. [2022-01-10 13:17:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.5823008849557523) internal successors, (894), 565 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 894 transitions. [2022-01-10 13:17:09,910 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 894 transitions. Word has length 65 [2022-01-10 13:17:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:09,910 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 894 transitions. [2022-01-10 13:17:09,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:09,911 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 894 transitions. [2022-01-10 13:17:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:17:09,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:09,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:09,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:17:09,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1392201104, now seen corresponding path program 1 times [2022-01-10 13:17:09,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:09,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827469365] [2022-01-10 13:17:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:09,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:10,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:10,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827469365] [2022-01-10 13:17:10,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827469365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:10,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:10,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:10,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176616504] [2022-01-10 13:17:10,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:10,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:10,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:10,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:10,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:10,035 INFO L87 Difference]: Start difference. First operand 566 states and 894 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:10,075 INFO L93 Difference]: Finished difference Result 1011 states and 1640 transitions. [2022-01-10 13:17:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:10,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 13:17:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:10,078 INFO L225 Difference]: With dead ends: 1011 [2022-01-10 13:17:10,079 INFO L226 Difference]: Without dead ends: 701 [2022-01-10 13:17:10,079 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 13:17:10,086 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:10,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 513 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-01-10 13:17:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 699. [2022-01-10 13:17:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.5974212034383954) internal successors, (1115), 698 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1115 transitions. [2022-01-10 13:17:10,135 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1115 transitions. Word has length 65 [2022-01-10 13:17:10,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:10,137 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1115 transitions. [2022-01-10 13:17:10,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1115 transitions. [2022-01-10 13:17:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:17:10,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:10,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:10,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:17:10,138 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:10,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1142110404, now seen corresponding path program 1 times [2022-01-10 13:17:10,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:10,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316746152] [2022-01-10 13:17:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:10,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:10,181 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 13:17:10,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:10,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316746152] [2022-01-10 13:17:10,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316746152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:10,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:10,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:10,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490942545] [2022-01-10 13:17:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:10,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:10,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:10,183 INFO L87 Difference]: Start difference. First operand 699 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:10,245 INFO L93 Difference]: Finished difference Result 2059 states and 3281 transitions. [2022-01-10 13:17:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:10,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 13:17:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:10,251 INFO L225 Difference]: With dead ends: 2059 [2022-01-10 13:17:10,251 INFO L226 Difference]: Without dead ends: 1388 [2022-01-10 13:17:10,252 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 13:17:10,253 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 213 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:10,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 649 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-01-10 13:17:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 701. [2022-01-10 13:17:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.5957142857142856) internal successors, (1117), 700 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1117 transitions. [2022-01-10 13:17:10,298 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1117 transitions. Word has length 65 [2022-01-10 13:17:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:10,299 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1117 transitions. [2022-01-10 13:17:10,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1117 transitions. [2022-01-10 13:17:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 13:17:10,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:10,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:10,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:17:10,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:10,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2063279837, now seen corresponding path program 1 times [2022-01-10 13:17:10,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:10,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407275960] [2022-01-10 13:17:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:10,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:10,412 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 13:17:10,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:10,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407275960] [2022-01-10 13:17:10,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407275960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:10,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:10,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:17:10,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603498971] [2022-01-10 13:17:10,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:10,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:17:10,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:17:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:10,414 INFO L87 Difference]: Start difference. First operand 701 states and 1117 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:10,591 INFO L93 Difference]: Finished difference Result 2651 states and 4216 transitions. [2022-01-10 13:17:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:17:10,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 13:17:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:10,599 INFO L225 Difference]: With dead ends: 2651 [2022-01-10 13:17:10,600 INFO L226 Difference]: Without dead ends: 1962 [2022-01-10 13:17:10,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:17:10,603 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 660 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:10,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 942 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-01-10 13:17:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1289. [2022-01-10 13:17:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1288 states have (on average 1.5776397515527951) internal successors, (2032), 1288 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 2032 transitions. [2022-01-10 13:17:10,695 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 2032 transitions. Word has length 66 [2022-01-10 13:17:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:10,695 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 2032 transitions. [2022-01-10 13:17:10,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 2032 transitions. [2022-01-10 13:17:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 13:17:10,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:10,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:10,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:17:10,697 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:10,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1589021305, now seen corresponding path program 1 times [2022-01-10 13:17:10,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:10,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208809695] [2022-01-10 13:17:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:10,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:10,766 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 13:17:10,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:10,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208809695] [2022-01-10 13:17:10,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208809695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:10,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:10,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:10,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760787887] [2022-01-10 13:17:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:10,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:10,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:10,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:10,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:10,768 INFO L87 Difference]: Start difference. First operand 1289 states and 2032 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:10,845 INFO L93 Difference]: Finished difference Result 2306 states and 3633 transitions. [2022-01-10 13:17:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:10,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 13:17:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:10,849 INFO L225 Difference]: With dead ends: 2306 [2022-01-10 13:17:10,849 INFO L226 Difference]: Without dead ends: 1033 [2022-01-10 13:17:10,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:10,852 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 69 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:10,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 707 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-01-10 13:17:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1033. [2022-01-10 13:17:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 1.574612403100775) internal successors, (1625), 1032 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1625 transitions. [2022-01-10 13:17:10,920 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1625 transitions. Word has length 66 [2022-01-10 13:17:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:10,921 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1625 transitions. [2022-01-10 13:17:10,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1625 transitions. [2022-01-10 13:17:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 13:17:10,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:10,924 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 13:17:10,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:17:10,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1650526316, now seen corresponding path program 1 times [2022-01-10 13:17:10,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:10,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713858038] [2022-01-10 13:17:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:10,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:10,964 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 13:17:10,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:10,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713858038] [2022-01-10 13:17:10,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713858038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:10,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:10,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:10,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485114640] [2022-01-10 13:17:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:10,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:10,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:10,966 INFO L87 Difference]: Start difference. First operand 1033 states and 1625 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 13:17:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:11,052 INFO L93 Difference]: Finished difference Result 2048 states and 3213 transitions. [2022-01-10 13:17:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:11,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 13:17:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:11,057 INFO L225 Difference]: With dead ends: 2048 [2022-01-10 13:17:11,057 INFO L226 Difference]: Without dead ends: 1369 [2022-01-10 13:17:11,058 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 13:17:11,058 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 210 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:11,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 450 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-01-10 13:17:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1033. [2022-01-10 13:17:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 1.573643410852713) internal successors, (1624), 1032 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1624 transitions. [2022-01-10 13:17:11,125 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1624 transitions. Word has length 69 [2022-01-10 13:17:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:11,126 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1624 transitions. [2022-01-10 13:17:11,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 13:17:11,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1624 transitions. [2022-01-10 13:17:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 13:17:11,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:11,129 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 13:17:11,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:17:11,129 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1373489108, now seen corresponding path program 1 times [2022-01-10 13:17:11,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:11,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680483813] [2022-01-10 13:17:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:11,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:11,301 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 13:17:11,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:11,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680483813] [2022-01-10 13:17:11,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680483813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:11,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:11,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:11,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112792836] [2022-01-10 13:17:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:11,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:11,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:11,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:11,303 INFO L87 Difference]: Start difference. First operand 1033 states and 1624 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 13:17:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:11,466 INFO L93 Difference]: Finished difference Result 2685 states and 4328 transitions. [2022-01-10 13:17:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:11,466 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 13:17:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:11,472 INFO L225 Difference]: With dead ends: 2685 [2022-01-10 13:17:11,472 INFO L226 Difference]: Without dead ends: 1813 [2022-01-10 13:17:11,475 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 13:17:11,476 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 121 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:11,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 420 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:11,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2022-01-10 13:17:11,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1811. [2022-01-10 13:17:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 1.5950276243093922) internal successors, (2887), 1810 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2887 transitions. [2022-01-10 13:17:11,649 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2887 transitions. Word has length 70 [2022-01-10 13:17:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:11,649 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 2887 transitions. [2022-01-10 13:17:11,650 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 13:17:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2887 transitions. [2022-01-10 13:17:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 13:17:11,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:11,651 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] [2022-01-10 13:17:11,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:17:11,651 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1659559100, now seen corresponding path program 1 times [2022-01-10 13:17:11,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:11,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901132282] [2022-01-10 13:17:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:11,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:11,710 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 13:17:11,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:11,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901132282] [2022-01-10 13:17:11,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901132282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:11,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:11,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:11,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816590932] [2022-01-10 13:17:11,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:11,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:11,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:11,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:11,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:11,712 INFO L87 Difference]: Start difference. First operand 1811 states and 2887 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 13:17:11,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:11,969 INFO L93 Difference]: Finished difference Result 5059 states and 8137 transitions. [2022-01-10 13:17:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:11,970 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 13:17:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:11,980 INFO L225 Difference]: With dead ends: 5059 [2022-01-10 13:17:11,980 INFO L226 Difference]: Without dead ends: 3409 [2022-01-10 13:17:11,984 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 13:17:11,984 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 151 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:11,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 597 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2022-01-10 13:17:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3407. [2022-01-10 13:17:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 1.5845566647093365) internal successors, (5397), 3406 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 5397 transitions. [2022-01-10 13:17:12,288 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 5397 transitions. Word has length 72 [2022-01-10 13:17:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:12,288 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 5397 transitions. [2022-01-10 13:17:12,288 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 13:17:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 5397 transitions. [2022-01-10 13:17:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 13:17:12,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:12,290 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 13:17:12,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:17:12,290 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash -853908261, now seen corresponding path program 1 times [2022-01-10 13:17:12,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:12,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647030939] [2022-01-10 13:17:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:12,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:12,340 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 13:17:12,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:12,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647030939] [2022-01-10 13:17:12,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647030939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:12,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:12,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:12,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375764986] [2022-01-10 13:17:12,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:12,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:12,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:12,342 INFO L87 Difference]: Start difference. First operand 3407 states and 5397 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 13:17:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:12,848 INFO L93 Difference]: Finished difference Result 9063 states and 14371 transitions. [2022-01-10 13:17:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 13:17:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:12,866 INFO L225 Difference]: With dead ends: 9063 [2022-01-10 13:17:12,866 INFO L226 Difference]: Without dead ends: 5736 [2022-01-10 13:17:12,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:12,870 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 406 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:12,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 544 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2022-01-10 13:17:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 3412. [2022-01-10 13:17:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 1.5828202873057755) internal successors, (5399), 3411 states have internal predecessors, (5399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5399 transitions. [2022-01-10 13:17:13,173 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5399 transitions. Word has length 72 [2022-01-10 13:17:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:13,174 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 5399 transitions. [2022-01-10 13:17:13,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 13:17:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5399 transitions. [2022-01-10 13:17:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 13:17:13,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:13,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:13,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:17:13,175 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1840965122, now seen corresponding path program 1 times [2022-01-10 13:17:13,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:13,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219180308] [2022-01-10 13:17:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:13,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:13,247 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 13:17:13,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:13,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219180308] [2022-01-10 13:17:13,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219180308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:13,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:13,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:13,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337876401] [2022-01-10 13:17:13,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:13,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:13,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:13,248 INFO L87 Difference]: Start difference. First operand 3412 states and 5399 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 13:17:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:13,876 INFO L93 Difference]: Finished difference Result 9838 states and 15586 transitions. [2022-01-10 13:17:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 13:17:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:13,897 INFO L225 Difference]: With dead ends: 9838 [2022-01-10 13:17:13,897 INFO L226 Difference]: Without dead ends: 6494 [2022-01-10 13:17:13,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:13,904 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 531 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:13,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 425 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2022-01-10 13:17:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 6492. [2022-01-10 13:17:14,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 6491 states have (on average 1.5754121090741027) internal successors, (10226), 6491 states have internal predecessors, (10226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 10226 transitions. [2022-01-10 13:17:14,506 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 10226 transitions. Word has length 72 [2022-01-10 13:17:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:14,506 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 10226 transitions. [2022-01-10 13:17:14,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 13:17:14,507 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 10226 transitions. [2022-01-10 13:17:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 13:17:14,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:14,509 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] [2022-01-10 13:17:14,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:17:14,509 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:14,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:14,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1922282855, now seen corresponding path program 1 times [2022-01-10 13:17:14,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:14,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633361017] [2022-01-10 13:17:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:14,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:14,587 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 13:17:14,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:14,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633361017] [2022-01-10 13:17:14,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633361017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:14,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:14,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:14,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713990376] [2022-01-10 13:17:14,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:14,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:14,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:14,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:14,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:14,589 INFO L87 Difference]: Start difference. First operand 6492 states and 10226 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:15,257 INFO L93 Difference]: Finished difference Result 12238 states and 19484 transitions. [2022-01-10 13:17:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:15,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 13:17:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:15,282 INFO L225 Difference]: With dead ends: 12238 [2022-01-10 13:17:15,283 INFO L226 Difference]: Without dead ends: 9026 [2022-01-10 13:17:15,288 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 13:17:15,289 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 122 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:15,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 494 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2022-01-10 13:17:16,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 9024. [2022-01-10 13:17:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9024 states, 9023 states have (on average 1.577967416602017) internal successors, (14238), 9023 states have internal predecessors, (14238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9024 states to 9024 states and 14238 transitions. [2022-01-10 13:17:16,186 INFO L78 Accepts]: Start accepts. Automaton has 9024 states and 14238 transitions. Word has length 73 [2022-01-10 13:17:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:16,186 INFO L470 AbstractCegarLoop]: Abstraction has 9024 states and 14238 transitions. [2022-01-10 13:17:16,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 9024 states and 14238 transitions. [2022-01-10 13:17:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 13:17:16,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:16,189 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] [2022-01-10 13:17:16,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:17:16,189 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash -224337655, now seen corresponding path program 1 times [2022-01-10 13:17:16,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:16,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105508560] [2022-01-10 13:17:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:16,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:16,290 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 13:17:16,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:16,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105508560] [2022-01-10 13:17:16,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105508560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:16,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:16,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:16,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229982398] [2022-01-10 13:17:16,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:16,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:16,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:16,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:16,292 INFO L87 Difference]: Start difference. First operand 9024 states and 14238 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:17,116 INFO L93 Difference]: Finished difference Result 17748 states and 28216 transitions. [2022-01-10 13:17:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:17,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 13:17:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:17,138 INFO L225 Difference]: With dead ends: 17748 [2022-01-10 13:17:17,138 INFO L226 Difference]: Without dead ends: 11257 [2022-01-10 13:17:17,145 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 13:17:17,146 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 127 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:17,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2022-01-10 13:17:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 11031. [2022-01-10 13:17:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11031 states, 11030 states have (on average 1.5756119673617408) internal successors, (17379), 11030 states have internal predecessors, (17379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11031 states to 11031 states and 17379 transitions. [2022-01-10 13:17:17,983 INFO L78 Accepts]: Start accepts. Automaton has 11031 states and 17379 transitions. Word has length 73 [2022-01-10 13:17:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:17,984 INFO L470 AbstractCegarLoop]: Abstraction has 11031 states and 17379 transitions. [2022-01-10 13:17:17,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 11031 states and 17379 transitions. [2022-01-10 13:17:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 13:17:17,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:17,986 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] [2022-01-10 13:17:17,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:17:17,986 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash -183612262, now seen corresponding path program 1 times [2022-01-10 13:17:17,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:17,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716325582] [2022-01-10 13:17:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:17,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:18,033 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 13:17:18,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716325582] [2022-01-10 13:17:18,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716325582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:18,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:18,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:18,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119594484] [2022-01-10 13:17:18,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:18,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:18,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:18,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:18,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:18,035 INFO L87 Difference]: Start difference. First operand 11031 states and 17379 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:18,909 INFO L93 Difference]: Finished difference Result 16588 states and 26159 transitions. [2022-01-10 13:17:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:18,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 13:17:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:18,929 INFO L225 Difference]: With dead ends: 16588 [2022-01-10 13:17:18,929 INFO L226 Difference]: Without dead ends: 9379 [2022-01-10 13:17:18,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:18,941 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 47 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:18,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 688 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9379 states. [2022-01-10 13:17:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9379 to 9379. [2022-01-10 13:17:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9379 states, 9378 states have (on average 1.572510130091704) internal successors, (14747), 9378 states have internal predecessors, (14747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9379 states to 9379 states and 14747 transitions. [2022-01-10 13:17:19,863 INFO L78 Accepts]: Start accepts. Automaton has 9379 states and 14747 transitions. Word has length 74 [2022-01-10 13:17:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:19,863 INFO L470 AbstractCegarLoop]: Abstraction has 9379 states and 14747 transitions. [2022-01-10 13:17:19,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 9379 states and 14747 transitions. [2022-01-10 13:17:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 13:17:19,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:19,865 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] [2022-01-10 13:17:19,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:17:19,865 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash -781213159, now seen corresponding path program 1 times [2022-01-10 13:17:19,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:19,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304409123] [2022-01-10 13:17:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:19,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:19,951 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 13:17:19,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:19,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304409123] [2022-01-10 13:17:19,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304409123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:19,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:19,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:17:19,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753978201] [2022-01-10 13:17:19,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:17:19,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:17:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:19,953 INFO L87 Difference]: Start difference. First operand 9379 states and 14747 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:21,150 INFO L93 Difference]: Finished difference Result 24820 states and 38949 transitions. [2022-01-10 13:17:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:17:21,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 13:17:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:21,177 INFO L225 Difference]: With dead ends: 24820 [2022-01-10 13:17:21,177 INFO L226 Difference]: Without dead ends: 15485 [2022-01-10 13:17:21,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:17:21,189 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 784 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:21,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 730 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:21,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15485 states. [2022-01-10 13:17:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15485 to 9535. [2022-01-10 13:17:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9535 states, 9534 states have (on average 1.565345080763583) internal successors, (14924), 9534 states have internal predecessors, (14924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9535 states to 9535 states and 14924 transitions. [2022-01-10 13:17:21,965 INFO L78 Accepts]: Start accepts. Automaton has 9535 states and 14924 transitions. Word has length 74 [2022-01-10 13:17:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:21,965 INFO L470 AbstractCegarLoop]: Abstraction has 9535 states and 14924 transitions. [2022-01-10 13:17:21,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 9535 states and 14924 transitions. [2022-01-10 13:17:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 13:17:21,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:21,967 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] [2022-01-10 13:17:21,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:17:21,967 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash -285297283, now seen corresponding path program 1 times [2022-01-10 13:17:21,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:21,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024679365] [2022-01-10 13:17:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:21,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:22,013 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 13:17:22,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:22,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024679365] [2022-01-10 13:17:22,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024679365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:22,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:22,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:22,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539287396] [2022-01-10 13:17:22,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:22,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:22,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:22,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:22,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:22,015 INFO L87 Difference]: Start difference. First operand 9535 states and 14924 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:22,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:22,674 INFO L93 Difference]: Finished difference Result 17581 states and 27497 transitions. [2022-01-10 13:17:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:22,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 13:17:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:22,685 INFO L225 Difference]: With dead ends: 17581 [2022-01-10 13:17:22,686 INFO L226 Difference]: Without dead ends: 8082 [2022-01-10 13:17:22,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:22,696 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 47 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:22,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 683 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:22,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2022-01-10 13:17:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 8082. [2022-01-10 13:17:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.5619354040341542) internal successors, (12622), 8081 states have internal predecessors, (12622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 12622 transitions. [2022-01-10 13:17:23,338 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 12622 transitions. Word has length 74 [2022-01-10 13:17:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:23,338 INFO L470 AbstractCegarLoop]: Abstraction has 8082 states and 12622 transitions. [2022-01-10 13:17:23,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:23,339 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 12622 transitions. [2022-01-10 13:17:23,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:17:23,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:23,340 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 13:17:23,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:17:23,340 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:23,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:23,341 INFO L85 PathProgramCache]: Analyzing trace with hash -947000846, now seen corresponding path program 1 times [2022-01-10 13:17:23,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:23,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764873014] [2022-01-10 13:17:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:23,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:23,373 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 13:17:23,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764873014] [2022-01-10 13:17:23,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764873014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:23,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:23,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:23,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766762604] [2022-01-10 13:17:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:23,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:23,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:23,375 INFO L87 Difference]: Start difference. First operand 8082 states and 12622 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 13:17:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:24,248 INFO L93 Difference]: Finished difference Result 16154 states and 25222 transitions. [2022-01-10 13:17:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:24,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 13:17:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:24,267 INFO L225 Difference]: With dead ends: 16154 [2022-01-10 13:17:24,267 INFO L226 Difference]: Without dead ends: 11176 [2022-01-10 13:17:24,276 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 13:17:24,277 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 196 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:24,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 536 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11176 states. [2022-01-10 13:17:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11176 to 8082. [2022-01-10 13:17:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.5615641628511323) internal successors, (12619), 8081 states have internal predecessors, (12619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 12619 transitions. [2022-01-10 13:17:24,941 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 12619 transitions. Word has length 77 [2022-01-10 13:17:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:24,941 INFO L470 AbstractCegarLoop]: Abstraction has 8082 states and 12619 transitions. [2022-01-10 13:17:24,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 13:17:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 12619 transitions. [2022-01-10 13:17:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 13:17:24,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:24,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:24,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:17:24,943 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash 671320266, now seen corresponding path program 1 times [2022-01-10 13:17:24,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:24,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697783241] [2022-01-10 13:17:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:24,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:25,100 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 13:17:25,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:25,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697783241] [2022-01-10 13:17:25,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697783241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:25,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:25,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:25,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780942966] [2022-01-10 13:17:25,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:25,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:25,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:25,102 INFO L87 Difference]: Start difference. First operand 8082 states and 12619 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:27,163 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 13:17:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:28,654 INFO L93 Difference]: Finished difference Result 22326 states and 35277 transitions. [2022-01-10 13:17:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:28,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 13:17:28,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:28,675 INFO L225 Difference]: With dead ends: 22326 [2022-01-10 13:17:28,675 INFO L226 Difference]: Without dead ends: 14724 [2022-01-10 13:17:28,682 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 13:17:28,683 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 111 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:28,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 402 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 13:17:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14724 states. [2022-01-10 13:17:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14724 to 14722. [2022-01-10 13:17:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14722 states, 14721 states have (on average 1.5680320630391957) internal successors, (23083), 14721 states have internal predecessors, (23083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14722 states to 14722 states and 23083 transitions. [2022-01-10 13:17:30,167 INFO L78 Accepts]: Start accepts. Automaton has 14722 states and 23083 transitions. Word has length 78 [2022-01-10 13:17:30,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:30,167 INFO L470 AbstractCegarLoop]: Abstraction has 14722 states and 23083 transitions. [2022-01-10 13:17:30,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:30,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14722 states and 23083 transitions. [2022-01-10 13:17:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 13:17:30,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:30,169 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 13:17:30,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:17:30,169 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -433940494, now seen corresponding path program 1 times [2022-01-10 13:17:30,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:30,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937303538] [2022-01-10 13:17:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:30,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:30,229 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 13:17:30,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:30,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937303538] [2022-01-10 13:17:30,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937303538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:30,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:30,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:30,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996802638] [2022-01-10 13:17:30,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:30,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:30,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:30,231 INFO L87 Difference]: Start difference. First operand 14722 states and 23083 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:17:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:32,532 INFO L93 Difference]: Finished difference Result 37294 states and 58638 transitions. [2022-01-10 13:17:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:32,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:17:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:32,564 INFO L225 Difference]: With dead ends: 37294 [2022-01-10 13:17:32,564 INFO L226 Difference]: Without dead ends: 23052 [2022-01-10 13:17:32,575 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 13:17:32,576 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 134 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:32,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 565 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23052 states. [2022-01-10 13:17:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23052 to 23050. [2022-01-10 13:17:34,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23050 states, 23049 states have (on average 1.5526920907631567) internal successors, (35788), 23049 states have internal predecessors, (35788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23050 states to 23050 states and 35788 transitions. [2022-01-10 13:17:35,005 INFO L78 Accepts]: Start accepts. Automaton has 23050 states and 35788 transitions. Word has length 80 [2022-01-10 13:17:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:35,006 INFO L470 AbstractCegarLoop]: Abstraction has 23050 states and 35788 transitions. [2022-01-10 13:17:35,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:17:35,006 INFO L276 IsEmpty]: Start isEmpty. Operand 23050 states and 35788 transitions. [2022-01-10 13:17:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 13:17:35,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:35,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:35,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:17:35,008 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash -881664654, now seen corresponding path program 1 times [2022-01-10 13:17:35,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:35,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698765829] [2022-01-10 13:17:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:35,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:35,070 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 13:17:35,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:35,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698765829] [2022-01-10 13:17:35,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698765829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:35,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:35,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:35,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408514184] [2022-01-10 13:17:35,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:35,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:35,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:35,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:35,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:35,072 INFO L87 Difference]: Start difference. First operand 23050 states and 35788 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:17:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:38,850 INFO L93 Difference]: Finished difference Result 58342 states and 90734 transitions. [2022-01-10 13:17:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:38,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:17:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:38,908 INFO L225 Difference]: With dead ends: 58342 [2022-01-10 13:17:38,908 INFO L226 Difference]: Without dead ends: 35924 [2022-01-10 13:17:38,927 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 13:17:38,928 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 137 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:38,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35924 states. [2022-01-10 13:17:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35924 to 35922. [2022-01-10 13:17:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35922 states, 35921 states have (on average 1.535257927117842) internal successors, (55148), 35921 states have internal predecessors, (55148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35922 states to 35922 states and 55148 transitions. [2022-01-10 13:17:42,994 INFO L78 Accepts]: Start accepts. Automaton has 35922 states and 55148 transitions. Word has length 80 [2022-01-10 13:17:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:42,994 INFO L470 AbstractCegarLoop]: Abstraction has 35922 states and 55148 transitions. [2022-01-10 13:17:42,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:17:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 35922 states and 55148 transitions. [2022-01-10 13:17:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 13:17:42,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:42,997 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] [2022-01-10 13:17:42,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:17:42,997 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash 294258291, now seen corresponding path program 1 times [2022-01-10 13:17:42,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:42,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732471996] [2022-01-10 13:17:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:42,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:43,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:43,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732471996] [2022-01-10 13:17:43,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732471996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:43,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:43,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:43,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551434666] [2022-01-10 13:17:43,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:43,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:43,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:43,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:43,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:43,058 INFO L87 Difference]: Start difference. First operand 35922 states and 55148 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:48,129 INFO L93 Difference]: Finished difference Result 80566 states and 124110 transitions. [2022-01-10 13:17:48,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:48,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 13:17:48,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:48,237 INFO L225 Difference]: With dead ends: 80566 [2022-01-10 13:17:48,237 INFO L226 Difference]: Without dead ends: 49972 [2022-01-10 13:17:48,268 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 13:17:48,269 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 117 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:48,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 434 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49972 states. [2022-01-10 13:17:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49972 to 48482. [2022-01-10 13:17:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48482 states, 48481 states have (on average 1.5246385181823807) internal successors, (73916), 48481 states have internal predecessors, (73916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48482 states to 48482 states and 73916 transitions. [2022-01-10 13:17:53,538 INFO L78 Accepts]: Start accepts. Automaton has 48482 states and 73916 transitions. Word has length 81 [2022-01-10 13:17:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:53,538 INFO L470 AbstractCegarLoop]: Abstraction has 48482 states and 73916 transitions. [2022-01-10 13:17:53,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 48482 states and 73916 transitions. [2022-01-10 13:17:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 13:17:53,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:53,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:53,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:17:53,541 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 834293096, now seen corresponding path program 1 times [2022-01-10 13:17:53,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:53,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544098711] [2022-01-10 13:17:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:53,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:53,632 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 13:17:53,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:53,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544098711] [2022-01-10 13:17:53,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544098711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:53,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:53,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:53,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440859664] [2022-01-10 13:17:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:53,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:53,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:53,633 INFO L87 Difference]: Start difference. First operand 48482 states and 73916 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:17:59,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:59,540 INFO L93 Difference]: Finished difference Result 98635 states and 150292 transitions. [2022-01-10 13:17:59,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:59,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 13:17:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:59,619 INFO L225 Difference]: With dead ends: 98635 [2022-01-10 13:17:59,619 INFO L226 Difference]: Without dead ends: 50312 [2022-01-10 13:17:59,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:59,655 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 492 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:59,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 411 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50312 states. [2022-01-10 13:18:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50312 to 48552. [2022-01-10 13:18:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48552 states, 48551 states have (on average 1.5238203126609133) internal successors, (73983), 48551 states have internal predecessors, (73983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48552 states to 48552 states and 73983 transitions. [2022-01-10 13:18:05,182 INFO L78 Accepts]: Start accepts. Automaton has 48552 states and 73983 transitions. Word has length 82 [2022-01-10 13:18:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:05,182 INFO L470 AbstractCegarLoop]: Abstraction has 48552 states and 73983 transitions. [2022-01-10 13:18:05,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 48552 states and 73983 transitions. [2022-01-10 13:18:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 13:18:05,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:05,184 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] [2022-01-10 13:18:05,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:18:05,184 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash 36381986, now seen corresponding path program 1 times [2022-01-10 13:18:05,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:05,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044326067] [2022-01-10 13:18:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:05,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:05,244 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 13:18:05,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:05,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044326067] [2022-01-10 13:18:05,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044326067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:05,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:05,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:05,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359882572] [2022-01-10 13:18:05,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:05,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:05,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:05,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:05,246 INFO L87 Difference]: Start difference. First operand 48552 states and 73983 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:12,140 INFO L93 Difference]: Finished difference Result 93018 states and 142767 transitions. [2022-01-10 13:18:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:12,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 13:18:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:12,262 INFO L225 Difference]: With dead ends: 93018 [2022-01-10 13:18:12,263 INFO L226 Difference]: Without dead ends: 61664 [2022-01-10 13:18:12,289 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 13:18:12,289 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 112 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:12,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 463 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61664 states.