/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:46:32,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:46:32,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:46:32,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:46:32,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:46:32,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:46:32,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:46:32,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:46:32,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:46:32,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:46:32,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:46:32,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:46:32,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:46:32,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:46:32,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:46:32,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:46:32,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:46:32,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:46:32,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:46:32,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:46:32,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:46:32,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:46:32,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:46:32,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:46:32,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:46:32,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:46:32,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:46:32,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:46:32,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:46:32,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:46:32,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:46:32,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:46:32,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:46:32,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:46:32,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:46:32,665 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:46:32,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:46:32,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:46:32,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:46:32,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:46:32,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:46:32,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:46:32,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:46:32,666 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:46:32,666 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:46:32,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:46:32,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:46:32,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:46:32,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:46:32,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:46:32,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:46:32,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:46:32,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:46:32,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:46:32,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:46:32,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:46:32,669 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:46:32,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:46:32,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:46:32,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:46:32,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:46:32,670 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:46:32,670 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:46:32,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:46:32,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:46:32,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:46:32,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:46:32,960 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:46:32,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-11 00:46:33,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c28e3cd/2874903b5061431989ebd313a45ff615/FLAG142f52cbd [2022-01-11 00:46:33,511 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:46:33,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-11 00:46:33,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c28e3cd/2874903b5061431989ebd313a45ff615/FLAG142f52cbd [2022-01-11 00:46:34,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c28e3cd/2874903b5061431989ebd313a45ff615 [2022-01-11 00:46:34,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:46:34,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:46:34,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:46:34,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:46:34,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:46:34,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76397ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34, skipping insertion in model container [2022-01-11 00:46:34,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:46:34,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:46:34,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-01-11 00:46:34,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:46:34,398 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:46:34,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-01-11 00:46:34,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:46:34,515 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:46:34,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34 WrapperNode [2022-01-11 00:46:34,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:46:34,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:46:34,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:46:34,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:46:34,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,568 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 751 [2022-01-11 00:46:34,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:46:34,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:46:34,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:46:34,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:46:34,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:46:34,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:46:34,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:46:34,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:46:34,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (1/1) ... [2022-01-11 00:46:34,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:46:34,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:46:34,656 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) [2022-01-11 00:46:34,681 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 [2022-01-11 00:46:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:46:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:46:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:46:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:46:34,831 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:46:34,846 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:46:35,435 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:46:35,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:46:35,446 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:46:35,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:46:35 BoogieIcfgContainer [2022-01-11 00:46:35,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:46:35,450 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:46:35,450 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:46:35,451 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:46:35,454 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:46:35" (1/1) ... [2022-01-11 00:46:36,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:46:36 BasicIcfg [2022-01-11 00:46:36,056 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:46:36,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:46:36,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:46:36,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:46:36,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:46:34" (1/4) ... [2022-01-11 00:46:36,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d5a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:46:36, skipping insertion in model container [2022-01-11 00:46:36,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:34" (2/4) ... [2022-01-11 00:46:36,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d5a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:46:36, skipping insertion in model container [2022-01-11 00:46:36,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:46:35" (3/4) ... [2022-01-11 00:46:36,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d5a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:46:36, skipping insertion in model container [2022-01-11 00:46:36,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:46:36" (4/4) ... [2022-01-11 00:46:36,065 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 00:46:36,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:46:36,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:46:36,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:46:36,125 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 [2022-01-11 00:46:36,125 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:46:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.7205882352941178) internal successors, (351), 205 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:36,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:46:36,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:46:36,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:46:36,163 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:46:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:46:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1850163097, now seen corresponding path program 1 times [2022-01-11 00:46:36,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:46:36,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781020047] [2022-01-11 00:46:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:46:36,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:46:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:46:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:46:36,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:46:36,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781020047] [2022-01-11 00:46:36,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781020047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:46:36,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:46:36,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:46:36,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388394747] [2022-01-11 00:46:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:46:36,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:46:36,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:46:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:46:36,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:46:36,831 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.7205882352941178) internal successors, (351), 205 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:46:38,151 INFO L93 Difference]: Finished difference Result 417 states and 687 transitions. [2022-01-11 00:46:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:46:38,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 00:46:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:46:38,174 INFO L225 Difference]: With dead ends: 417 [2022-01-11 00:46:38,174 INFO L226 Difference]: Without dead ends: 314 [2022-01-11 00:46:38,178 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 [2022-01-11 00:46:38,183 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 172 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:46:38,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 655 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 00:46:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-11 00:46:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2022-01-11 00:46:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.504823151125402) internal successors, (468), 311 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 468 transitions. [2022-01-11 00:46:38,290 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 468 transitions. Word has length 79 [2022-01-11 00:46:38,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:46:38,292 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 468 transitions. [2022-01-11 00:46:38,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 468 transitions. [2022-01-11 00:46:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:46:38,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:46:38,300 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] [2022-01-11 00:46:38,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:46:38,300 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:46:38,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:46:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1521467084, now seen corresponding path program 1 times [2022-01-11 00:46:38,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:46:38,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652605442] [2022-01-11 00:46:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:46:38,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:46:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:46:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:46:38,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:46:38,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652605442] [2022-01-11 00:46:38,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652605442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:46:38,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:46:38,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:46:38,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990811499] [2022-01-11 00:46:38,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:46:38,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:46:38,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:46:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:46:38,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:46:38,644 INFO L87 Difference]: Start difference. First operand 312 states and 468 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:46:38,847 INFO L93 Difference]: Finished difference Result 522 states and 800 transitions. [2022-01-11 00:46:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:46:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 00:46:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:46:38,851 INFO L225 Difference]: With dead ends: 522 [2022-01-11 00:46:38,851 INFO L226 Difference]: Without dead ends: 520 [2022-01-11 00:46:38,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:46:38,856 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 428 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:46:38,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 823 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:46:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-01-11 00:46:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 314. [2022-01-11 00:46:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.5015974440894568) internal successors, (470), 313 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 470 transitions. [2022-01-11 00:46:38,944 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 470 transitions. Word has length 80 [2022-01-11 00:46:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:46:38,947 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 470 transitions. [2022-01-11 00:46:38,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 470 transitions. [2022-01-11 00:46:38,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 00:46:38,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:46:38,951 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] [2022-01-11 00:46:38,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:46:38,953 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:46:38,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:46:38,958 INFO L85 PathProgramCache]: Analyzing trace with hash 80170724, now seen corresponding path program 1 times [2022-01-11 00:46:38,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:46:38,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193736246] [2022-01-11 00:46:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:46:38,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:46:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:46:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:46:39,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:46:39,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193736246] [2022-01-11 00:46:39,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193736246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:46:39,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:46:39,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:46:39,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140134626] [2022-01-11 00:46:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:46:39,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:46:39,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:46:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:46:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:46:39,324 INFO L87 Difference]: Start difference. First operand 314 states and 470 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2022-01-11 00:46:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:46:40,665 INFO L93 Difference]: Finished difference Result 2519 states and 3950 transitions. [2022-01-11 00:46:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 00:46:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 [2022-01-11 00:46:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:46:40,677 INFO L225 Difference]: With dead ends: 2519 [2022-01-11 00:46:40,677 INFO L226 Difference]: Without dead ends: 2281 [2022-01-11 00:46:40,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-11 00:46:40,687 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 2817 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 00:46:40,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 2403 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 00:46:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2281 states. [2022-01-11 00:46:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2281 to 1238. [2022-01-11 00:46:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.5545675020210186) internal successors, (1923), 1237 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1923 transitions. [2022-01-11 00:46:40,973 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1923 transitions. Word has length 81 [2022-01-11 00:46:40,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:46:40,973 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1923 transitions. [2022-01-11 00:46:40,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2022-01-11 00:46:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1923 transitions. [2022-01-11 00:46:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:46:40,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:46:40,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:46:40,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:46:40,976 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:46:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:46:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -174422375, now seen corresponding path program 1 times [2022-01-11 00:46:40,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:46:40,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078252708] [2022-01-11 00:46:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:46:40,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:46:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:46:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:46:41,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:46:41,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078252708] [2022-01-11 00:46:41,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078252708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:46:41,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:46:41,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:46:41,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371025042] [2022-01-11 00:46:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:46:41,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:46:41,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:46:41,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:46:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:46:41,218 INFO L87 Difference]: Start difference. First operand 1238 states and 1923 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) [2022-01-11 00:46:43,330 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 [] [2022-01-11 00:46:45,854 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 [] [2022-01-11 00:46:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:46:45,868 INFO L93 Difference]: Finished difference Result 2841 states and 4464 transitions. [2022-01-11 00:46:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:46:46,017 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 [2022-01-11 00:46:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:46:46,025 INFO L225 Difference]: With dead ends: 2841 [2022-01-11 00:46:46,025 INFO L226 Difference]: Without dead ends: 2007 [2022-01-11 00:46:46,027 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 [2022-01-11 00:46:46,028 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 302 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:46:46,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 606 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-01-11 00:46:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-01-11 00:46:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1995. [2022-01-11 00:46:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 1.559679037111334) internal successors, (3110), 1994 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3110 transitions. [2022-01-11 00:46:46,410 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3110 transitions. Word has length 82 [2022-01-11 00:46:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:46:46,410 INFO L470 AbstractCegarLoop]: Abstraction has 1995 states and 3110 transitions. [2022-01-11 00:46:46,410 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) [2022-01-11 00:46:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3110 transitions. [2022-01-11 00:46:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:46:46,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:46:46,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:46:46,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:46:46,413 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:46:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:46:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1167663005, now seen corresponding path program 1 times [2022-01-11 00:46:46,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:46:46,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985459814] [2022-01-11 00:46:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:46:46,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:46:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:46:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:46:46,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:46:46,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985459814] [2022-01-11 00:46:46,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985459814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:46:46,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:46:46,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:46:46,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335346272] [2022-01-11 00:46:46,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:46:46,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:46:46,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:46:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:46:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:46:46,547 INFO L87 Difference]: Start difference. First operand 1995 states and 3110 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:46:47,073 INFO L93 Difference]: Finished difference Result 3691 states and 5786 transitions. [2022-01-11 00:46:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:46:47,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:46:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:46:47,082 INFO L225 Difference]: With dead ends: 3691 [2022-01-11 00:46:47,083 INFO L226 Difference]: Without dead ends: 2269 [2022-01-11 00:46:47,084 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 [2022-01-11 00:46:47,085 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 210 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:46:47,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 572 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:46:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2022-01-11 00:46:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2267. [2022-01-11 00:46:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 1.5445719329214476) internal successors, (3500), 2266 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3500 transitions. [2022-01-11 00:46:47,520 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3500 transitions. Word has length 83 [2022-01-11 00:46:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:46:47,525 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 3500 transitions. [2022-01-11 00:46:47,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3500 transitions. [2022-01-11 00:46:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:46:47,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:46:47,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:46:47,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:46:47,531 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:46:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:46:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash -424540830, now seen corresponding path program 1 times [2022-01-11 00:46:47,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:46:47,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105821220] [2022-01-11 00:46:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:46:47,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:46:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:46:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:46:47,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:46:47,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105821220] [2022-01-11 00:46:47,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105821220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:46:47,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:46:47,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:46:47,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253411235] [2022-01-11 00:46:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:46:47,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:46:47,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:46:47,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:46:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:46:47,691 INFO L87 Difference]: Start difference. First operand 2267 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:46:48,333 INFO L93 Difference]: Finished difference Result 5502 states and 8549 transitions. [2022-01-11 00:46:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:46:48,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:46:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:46:48,351 INFO L225 Difference]: With dead ends: 5502 [2022-01-11 00:46:48,352 INFO L226 Difference]: Without dead ends: 3486 [2022-01-11 00:46:48,354 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 [2022-01-11 00:46:48,356 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 202 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:46:48,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 558 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:46:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-11 00:46:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3475. [2022-01-11 00:46:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 3474 states have (on average 1.5296488198042602) internal successors, (5314), 3474 states have internal predecessors, (5314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 5314 transitions. [2022-01-11 00:46:49,016 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 5314 transitions. Word has length 83 [2022-01-11 00:46:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:46:49,016 INFO L470 AbstractCegarLoop]: Abstraction has 3475 states and 5314 transitions. [2022-01-11 00:46:49,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 5314 transitions. [2022-01-11 00:46:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:46:49,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:46:49,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:46:49,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:46:49,019 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:46:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:46:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1328512445, now seen corresponding path program 1 times [2022-01-11 00:46:49,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:46:49,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032351191] [2022-01-11 00:46:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:46:49,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:46:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:46:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:46:49,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:46:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032351191] [2022-01-11 00:46:49,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032351191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:46:49,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:46:49,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:46:49,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954275358] [2022-01-11 00:46:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:46:49,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:46:49,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:46:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:46:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:46:49,370 INFO L87 Difference]: Start difference. First operand 3475 states and 5314 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:46:51,928 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 [] [2022-01-11 00:46:55,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:46:57,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:46:59,423 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 [] [2022-01-11 00:47:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:06,906 INFO L93 Difference]: Finished difference Result 27203 states and 41848 transitions. [2022-01-11 00:47:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:47:06,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:47:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:06,993 INFO L225 Difference]: With dead ends: 27203 [2022-01-11 00:47:06,993 INFO L226 Difference]: Without dead ends: 23844 [2022-01-11 00:47:07,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 00:47:07,006 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 1012 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-01-11 00:47:07,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 1551 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1019 Invalid, 4 Unknown, 0 Unchecked, 11.5s Time] [2022-01-11 00:47:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23844 states. [2022-01-11 00:47:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23844 to 12302. [2022-01-11 00:47:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12302 states, 12301 states have (on average 1.5253231444598) internal successors, (18763), 12301 states have internal predecessors, (18763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:47:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12302 states to 12302 states and 18763 transitions. [2022-01-11 00:47:10,774 INFO L78 Accepts]: Start accepts. Automaton has 12302 states and 18763 transitions. Word has length 83 [2022-01-11 00:47:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:10,775 INFO L470 AbstractCegarLoop]: Abstraction has 12302 states and 18763 transitions. [2022-01-11 00:47:10,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:47:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 12302 states and 18763 transitions. [2022-01-11 00:47:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:47:10,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:10,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:47:10,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:47:10,779 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:10,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1113630849, now seen corresponding path program 1 times [2022-01-11 00:47:10,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:10,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840259771] [2022-01-11 00:47:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:10,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:47:10,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:10,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840259771] [2022-01-11 00:47:10,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840259771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:10,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:10,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:47:10,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920253562] [2022-01-11 00:47:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:10,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:47:10,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:10,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:47:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:47:10,906 INFO L87 Difference]: Start difference. First operand 12302 states and 18763 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:47:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:16,850 INFO L93 Difference]: Finished difference Result 34033 states and 51831 transitions. [2022-01-11 00:47:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:47:16,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:47:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:16,901 INFO L225 Difference]: With dead ends: 34033 [2022-01-11 00:47:16,901 INFO L226 Difference]: Without dead ends: 22617 [2022-01-11 00:47:16,922 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 [2022-01-11 00:47:16,923 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 177 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:47:16,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 549 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:47:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22617 states. [2022-01-11 00:47:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22617 to 22581. [2022-01-11 00:47:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22581 states, 22580 states have (on average 1.5031000885739592) internal successors, (33940), 22580 states have internal predecessors, (33940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:47:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22581 states to 22581 states and 33940 transitions. [2022-01-11 00:47:23,071 INFO L78 Accepts]: Start accepts. Automaton has 22581 states and 33940 transitions. Word has length 83 [2022-01-11 00:47:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:23,071 INFO L470 AbstractCegarLoop]: Abstraction has 22581 states and 33940 transitions. [2022-01-11 00:47:23,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:47:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 22581 states and 33940 transitions. [2022-01-11 00:47:23,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:47:23,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:23,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:47:23,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:47:23,079 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1495673847, now seen corresponding path program 1 times [2022-01-11 00:47:23,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:23,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046440217] [2022-01-11 00:47:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:23,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:47:23,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:23,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046440217] [2022-01-11 00:47:23,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046440217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:23,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:23,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:47:23,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443729108] [2022-01-11 00:47:23,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:23,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:47:23,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:47:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:47:23,195 INFO L87 Difference]: Start difference. First operand 22581 states and 33940 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:47:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:29,400 INFO L93 Difference]: Finished difference Result 32214 states and 48319 transitions. [2022-01-11 00:47:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:47:29,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:47:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:29,452 INFO L225 Difference]: With dead ends: 32214 [2022-01-11 00:47:29,452 INFO L226 Difference]: Without dead ends: 23476 [2022-01-11 00:47:29,472 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 [2022-01-11 00:47:29,472 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 168 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:47:29,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 551 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:47:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23476 states. [2022-01-11 00:47:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23476 to 23474. [2022-01-11 00:47:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23474 states, 23473 states have (on average 1.4831082520342522) internal successors, (34813), 23473 states have internal predecessors, (34813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:47:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23474 states to 23474 states and 34813 transitions. [2022-01-11 00:47:35,662 INFO L78 Accepts]: Start accepts. Automaton has 23474 states and 34813 transitions. Word has length 83 [2022-01-11 00:47:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:35,662 INFO L470 AbstractCegarLoop]: Abstraction has 23474 states and 34813 transitions. [2022-01-11 00:47:35,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:47:35,663 INFO L276 IsEmpty]: Start isEmpty. Operand 23474 states and 34813 transitions. [2022-01-11 00:47:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:47:35,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:35,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:47:35,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:47:35,671 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1210165058, now seen corresponding path program 1 times [2022-01-11 00:47:35,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:35,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643264870] [2022-01-11 00:47:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:35,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:47:35,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:35,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643264870] [2022-01-11 00:47:35,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643264870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:35,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:35,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:47:35,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500313148] [2022-01-11 00:47:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:35,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:47:35,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:47:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:47:35,791 INFO L87 Difference]: Start difference. First operand 23474 states and 34813 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)