/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_SUM.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:21:40,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:21:40,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:21:40,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:21:40,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:21:40,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:21:40,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:21:40,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:21:40,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:21:40,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:21:40,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:21:40,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:21:40,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:21:40,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:21:40,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:21:40,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:21:40,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:21:40,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:21:40,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:21:40,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:21:40,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:21:40,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:21:40,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:21:40,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:21:40,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 07:21:40,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:21:40,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:21:40,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:21:40,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:21:40,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:21:40,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:21:40,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:21:40,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:21:40,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:21:40,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:21:40,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:21:40,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:21:40,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:21:40,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:21:40,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:21:40,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:21:40,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:21:40,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:21:40,528 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:21:40,528 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:21:40,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:21:40,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:21:40,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:21:40,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:21:40,756 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:21:40,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-01-11 07:21:40,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ec0d56b/fb23deb5703741378318eca97448f3a6/FLAG78d35b138 [2022-01-11 07:21:41,380 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:21:41,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-01-11 07:21:41,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ec0d56b/fb23deb5703741378318eca97448f3a6/FLAG78d35b138 [2022-01-11 07:21:41,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ec0d56b/fb23deb5703741378318eca97448f3a6 [2022-01-11 07:21:41,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:21:41,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:21:41,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:21:41,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:21:41,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:21:41,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:21:41" (1/1) ... [2022-01-11 07:21:41,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559b75a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:41, skipping insertion in model container [2022-01-11 07:21:41,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:21:41" (1/1) ... [2022-01-11 07:21:41,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:21:41,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:21:42,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c[8749,8762] [2022-01-11 07:21:42,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c[16039,16052] [2022-01-11 07:21:42,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:21:42,830 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:21:42,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c[8749,8762] [2022-01-11 07:21:42,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c[16039,16052] [2022-01-11 07:21:43,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:21:43,145 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:21:43,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43 WrapperNode [2022-01-11 07:21:43,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:21:43,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:21:43,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:21:43,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:21:43,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,361 INFO L137 Inliner]: procedures = 37, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5011 [2022-01-11 07:21:43,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:21:43,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:21:43,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:21:43,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:21:43,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:21:43,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:21:43,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:21:43,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:21:43,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (1/1) ... [2022-01-11 07:21:43,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:21:43,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:21:43,657 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 07:21:43,676 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 07:21:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:21:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:21:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:21:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:21:43,855 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:21:43,857 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:22:08,395 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:22:08,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:22:08,409 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 07:22:08,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:22:08 BoogieIcfgContainer [2022-01-11 07:22:08,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:22:08,413 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:22:08,413 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:22:08,415 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:22:08,417 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:22:08" (1/1) ... [2022-01-11 07:22:09,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:22:09 BasicIcfg [2022-01-11 07:22:09,683 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:22:09,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:22:09,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:22:09,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:22:09,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:21:41" (1/4) ... [2022-01-11 07:22:09,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f29a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:22:09, skipping insertion in model container [2022-01-11 07:22:09,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:21:43" (2/4) ... [2022-01-11 07:22:09,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f29a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:22:09, skipping insertion in model container [2022-01-11 07:22:09,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:22:08" (3/4) ... [2022-01-11 07:22:09,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f29a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:22:09, skipping insertion in model container [2022-01-11 07:22:09,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:22:09" (4/4) ... [2022-01-11 07:22:09,689 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.cTransformedIcfg [2022-01-11 07:22:09,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:22:09,700 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:22:09,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:22:09,744 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 07:22:09,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:22:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 07:22:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 07:22:09,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:09,775 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] [2022-01-11 07:22:09,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:09,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1222619222, now seen corresponding path program 1 times [2022-01-11 07:22:09,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:09,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843262556] [2022-01-11 07:22:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:09,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:09,993 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 07:22:09,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:09,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843262556] [2022-01-11 07:22:09,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843262556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:09,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:09,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:22:09,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801719439] [2022-01-11 07:22:09,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:09,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 07:22:09,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:10,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 07:22:10,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 07:22:10,025 INFO L87 Difference]: Start difference. First operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 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 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 07:22:10,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:10,085 INFO L93 Difference]: Finished difference Result 1759 states and 3336 transitions. [2022-01-11 07:22:10,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 07:22:10,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-11 07:22:10,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:10,108 INFO L225 Difference]: With dead ends: 1759 [2022-01-11 07:22:10,108 INFO L226 Difference]: Without dead ends: 829 [2022-01-11 07:22:10,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 07:22:10,117 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:10,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:22:10,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-01-11 07:22:10,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-01-11 07:22:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 827 states have (on average 1.8899637243047158) internal successors, (1563), 828 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states 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 07:22:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1563 transitions. [2022-01-11 07:22:10,185 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1563 transitions. Word has length 30 [2022-01-11 07:22:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:10,185 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1563 transitions. [2022-01-11 07:22:10,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 07:22:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1563 transitions. [2022-01-11 07:22:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 07:22:10,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:10,188 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] [2022-01-11 07:22:10,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:22:10,188 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:10,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1289625975, now seen corresponding path program 1 times [2022-01-11 07:22:10,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:10,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371660250] [2022-01-11 07:22:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:10,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:22:10,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:10,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371660250] [2022-01-11 07:22:10,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371660250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:10,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:10,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:22:10,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002730567] [2022-01-11 07:22:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:10,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:22:10,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:22:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:22:10,383 INFO L87 Difference]: Start difference. First operand 829 states and 1563 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 07:22:10,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:10,516 INFO L93 Difference]: Finished difference Result 879 states and 1639 transitions. [2022-01-11 07:22:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 07:22:10,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-11 07:22:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:10,519 INFO L225 Difference]: With dead ends: 879 [2022-01-11 07:22:10,520 INFO L226 Difference]: Without dead ends: 829 [2022-01-11 07:22:10,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:22:10,522 INFO L933 BasicCegarLoop]: 1561 mSDtfsCounter, 3 mSDsluCounter, 4657 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:10,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6218 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:22:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-01-11 07:22:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-01-11 07:22:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 827 states have (on average 1.8621523579201935) internal successors, (1540), 828 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states 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 07:22:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1540 transitions. [2022-01-11 07:22:10,535 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1540 transitions. Word has length 30 [2022-01-11 07:22:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:10,535 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1540 transitions. [2022-01-11 07:22:10,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 07:22:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1540 transitions. [2022-01-11 07:22:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 07:22:10,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:10,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:10,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:22:10,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1752680795, now seen corresponding path program 1 times [2022-01-11 07:22:10,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:10,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190925704] [2022-01-11 07:22:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:10,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:10,700 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 07:22:10,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:10,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190925704] [2022-01-11 07:22:10,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190925704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:10,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:10,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:22:10,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603064264] [2022-01-11 07:22:10,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:10,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:22:10,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:10,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:22:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:22:10,704 INFO L87 Difference]: Start difference. First operand 829 states and 1540 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:10,751 INFO L93 Difference]: Finished difference Result 915 states and 1674 transitions. [2022-01-11 07:22:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:22:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 07:22:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:10,758 INFO L225 Difference]: With dead ends: 915 [2022-01-11 07:22:10,758 INFO L226 Difference]: Without dead ends: 869 [2022-01-11 07:22:10,761 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 07:22:10,763 INFO L933 BasicCegarLoop]: 1582 mSDtfsCounter, 1497 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:10,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 1656 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:22:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-01-11 07:22:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 867. [2022-01-11 07:22:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 865 states have (on average 1.8497109826589595) internal successors, (1600), 866 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states 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 07:22:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1600 transitions. [2022-01-11 07:22:10,780 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1600 transitions. Word has length 52 [2022-01-11 07:22:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:10,780 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1600 transitions. [2022-01-11 07:22:10,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1600 transitions. [2022-01-11 07:22:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 07:22:10,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:10,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:10,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:22:10,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 597646534, now seen corresponding path program 1 times [2022-01-11 07:22:10,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604446533] [2022-01-11 07:22:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:10,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:10,897 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 07:22:10,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:10,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604446533] [2022-01-11 07:22:10,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604446533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:10,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:10,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:22:10,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427129196] [2022-01-11 07:22:10,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:10,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:22:10,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:22:10,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:22:10,900 INFO L87 Difference]: Start difference. First operand 867 states and 1600 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:10,926 INFO L93 Difference]: Finished difference Result 1023 states and 1844 transitions. [2022-01-11 07:22:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:22:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 07:22:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:10,930 INFO L225 Difference]: With dead ends: 1023 [2022-01-11 07:22:10,930 INFO L226 Difference]: Without dead ends: 939 [2022-01-11 07:22:10,932 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 07:22:10,939 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1493 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:10,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1655 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:22:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-01-11 07:22:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 937. [2022-01-11 07:22:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 935 states have (on average 1.827807486631016) internal successors, (1709), 936 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states 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 07:22:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1709 transitions. [2022-01-11 07:22:10,957 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1709 transitions. Word has length 52 [2022-01-11 07:22:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:10,957 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1709 transitions. [2022-01-11 07:22:10,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1709 transitions. [2022-01-11 07:22:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 07:22:10,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:10,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:10,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:22:10,958 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:10,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1234542394, now seen corresponding path program 1 times [2022-01-11 07:22:10,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:10,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438530460] [2022-01-11 07:22:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:10,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:11,060 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 07:22:11,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:11,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438530460] [2022-01-11 07:22:11,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438530460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:11,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:11,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:22:11,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028653055] [2022-01-11 07:22:11,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:11,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:22:11,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:22:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:22:11,062 INFO L87 Difference]: Start difference. First operand 937 states and 1709 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:11,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:11,094 INFO L93 Difference]: Finished difference Result 1221 states and 2151 transitions. [2022-01-11 07:22:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:22:11,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 07:22:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:11,098 INFO L225 Difference]: With dead ends: 1221 [2022-01-11 07:22:11,099 INFO L226 Difference]: Without dead ends: 1067 [2022-01-11 07:22:11,099 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 07:22:11,099 INFO L933 BasicCegarLoop]: 1572 mSDtfsCounter, 1489 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:11,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1654 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:22:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-01-11 07:22:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2022-01-11 07:22:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1063 states have (on average 1.7920978363123237) internal successors, (1905), 1064 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states 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 07:22:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1905 transitions. [2022-01-11 07:22:11,121 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1905 transitions. Word has length 52 [2022-01-11 07:22:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:11,124 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1905 transitions. [2022-01-11 07:22:11,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:11,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1905 transitions. [2022-01-11 07:22:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 07:22:11,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:11,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:11,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:22:11,127 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:11,127 INFO L85 PathProgramCache]: Analyzing trace with hash -411682841, now seen corresponding path program 1 times [2022-01-11 07:22:11,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:11,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334743400] [2022-01-11 07:22:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:11,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:11,867 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 07:22:11,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:11,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334743400] [2022-01-11 07:22:11,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334743400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:11,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:11,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 07:22:11,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955091039] [2022-01-11 07:22:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:11,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 07:22:11,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 07:22:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:22:11,869 INFO L87 Difference]: Start difference. First operand 1065 states and 1905 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:14,097 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 07:22:14,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:14,832 INFO L93 Difference]: Finished difference Result 1847 states and 3104 transitions. [2022-01-11 07:22:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:22:14,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 07:22:14,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:14,838 INFO L225 Difference]: With dead ends: 1847 [2022-01-11 07:22:14,838 INFO L226 Difference]: Without dead ends: 1565 [2022-01-11 07:22:14,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-11 07:22:14,839 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 3211 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3211 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:14,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3211 Valid, 4767 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-11 07:22:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-01-11 07:22:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1529. [2022-01-11 07:22:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1527 states have (on average 1.7111984282907662) internal successors, (2613), 1528 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states 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 07:22:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2613 transitions. [2022-01-11 07:22:14,886 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2613 transitions. Word has length 52 [2022-01-11 07:22:14,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:14,886 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 2613 transitions. [2022-01-11 07:22:14,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2613 transitions. [2022-01-11 07:22:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 07:22:14,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:14,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:14,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:22:14,887 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash -540765560, now seen corresponding path program 1 times [2022-01-11 07:22:14,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:14,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495620534] [2022-01-11 07:22:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:14,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:15,231 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 07:22:15,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:15,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495620534] [2022-01-11 07:22:15,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495620534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:15,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:15,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 07:22:15,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885591205] [2022-01-11 07:22:15,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:15,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 07:22:15,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 07:22:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 07:22:15,232 INFO L87 Difference]: Start difference. First operand 1529 states and 2613 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:16,761 INFO L93 Difference]: Finished difference Result 6569 states and 10357 transitions. [2022-01-11 07:22:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 07:22:16,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 07:22:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:16,782 INFO L225 Difference]: With dead ends: 6569 [2022-01-11 07:22:16,783 INFO L226 Difference]: Without dead ends: 5823 [2022-01-11 07:22:16,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 07:22:16,787 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 6333 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6333 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:16,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6333 Valid, 2548 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 07:22:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5823 states. [2022-01-11 07:22:17,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5823 to 2273. [2022-01-11 07:22:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2271 states have (on average 1.6332012329370322) internal successors, (3709), 2272 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states 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 07:22:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3709 transitions. [2022-01-11 07:22:17,121 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3709 transitions. Word has length 52 [2022-01-11 07:22:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:17,122 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 3709 transitions. [2022-01-11 07:22:17,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3709 transitions. [2022-01-11 07:22:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 07:22:17,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:17,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:17,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:22:17,123 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:17,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash -933400275, now seen corresponding path program 1 times [2022-01-11 07:22:17,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:17,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758187810] [2022-01-11 07:22:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:17,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:17,193 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 07:22:17,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758187810] [2022-01-11 07:22:17,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758187810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:17,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:17,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:22:17,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640950721] [2022-01-11 07:22:17,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:17,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:22:17,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:22:17,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:22:17,195 INFO L87 Difference]: Start difference. First operand 2273 states and 3709 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:17,849 INFO L93 Difference]: Finished difference Result 5069 states and 7863 transitions. [2022-01-11 07:22:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:22:17,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-11 07:22:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:17,861 INFO L225 Difference]: With dead ends: 5069 [2022-01-11 07:22:17,861 INFO L226 Difference]: Without dead ends: 3579 [2022-01-11 07:22:17,863 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 07:22:17,864 INFO L933 BasicCegarLoop]: 1593 mSDtfsCounter, 58 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:17,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 3121 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:22:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2022-01-11 07:22:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3545. [2022-01-11 07:22:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 3543 states have (on average 1.5458650860852385) internal successors, (5477), 3544 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states 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 07:22:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5477 transitions. [2022-01-11 07:22:18,415 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5477 transitions. Word has length 54 [2022-01-11 07:22:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:18,416 INFO L470 AbstractCegarLoop]: Abstraction has 3545 states and 5477 transitions. [2022-01-11 07:22:18,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5477 transitions. [2022-01-11 07:22:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 07:22:18,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:18,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:18,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:22:18,417 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash -902000561, now seen corresponding path program 1 times [2022-01-11 07:22:18,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:18,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500931112] [2022-01-11 07:22:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:18,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:18,746 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 07:22:18,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500931112] [2022-01-11 07:22:18,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500931112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:18,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:18,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 07:22:18,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504354840] [2022-01-11 07:22:18,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:18,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 07:22:18,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:18,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 07:22:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 07:22:18,748 INFO L87 Difference]: Start difference. First operand 3545 states and 5477 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:21,388 INFO L93 Difference]: Finished difference Result 12825 states and 18957 transitions. [2022-01-11 07:22:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 07:22:21,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-11 07:22:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:21,419 INFO L225 Difference]: With dead ends: 12825 [2022-01-11 07:22:21,419 INFO L226 Difference]: Without dead ends: 10063 [2022-01-11 07:22:21,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 07:22:21,424 INFO L933 BasicCegarLoop]: 1537 mSDtfsCounter, 6323 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6323 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:21,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6323 Valid, 2539 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 07:22:21,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10063 states. [2022-01-11 07:22:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 3545. [2022-01-11 07:22:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 3543 states have (on average 1.5390911656788033) internal successors, (5453), 3544 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states 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 07:22:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5453 transitions. [2022-01-11 07:22:22,190 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5453 transitions. Word has length 54 [2022-01-11 07:22:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:22,193 INFO L470 AbstractCegarLoop]: Abstraction has 3545 states and 5453 transitions. [2022-01-11 07:22:22,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5453 transitions. [2022-01-11 07:22:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 07:22:22,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:22,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:22,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:22:22,194 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:22,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:22,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1169757720, now seen corresponding path program 1 times [2022-01-11 07:22:22,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:22,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77125137] [2022-01-11 07:22:22,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:22,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:22,284 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 07:22:22,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:22,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77125137] [2022-01-11 07:22:22,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77125137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:22,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:22,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:22:22,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499608671] [2022-01-11 07:22:22,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:22,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:22:22,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:22:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:22:22,285 INFO L87 Difference]: Start difference. First operand 3545 states and 5453 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:22,814 INFO L93 Difference]: Finished difference Result 4565 states and 6943 transitions. [2022-01-11 07:22:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:22:22,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-11 07:22:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:22,820 INFO L225 Difference]: With dead ends: 4565 [2022-01-11 07:22:22,820 INFO L226 Difference]: Without dead ends: 2683 [2022-01-11 07:22:22,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:22:22,823 INFO L933 BasicCegarLoop]: 1539 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:22,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 1604 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:22:22,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2022-01-11 07:22:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2665. [2022-01-11 07:22:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2663 states have (on average 1.5640255351107772) internal successors, (4165), 2664 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states 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 07:22:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4165 transitions. [2022-01-11 07:22:23,285 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4165 transitions. Word has length 55 [2022-01-11 07:22:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:23,285 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 4165 transitions. [2022-01-11 07:22:23,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4165 transitions. [2022-01-11 07:22:23,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 07:22:23,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:23,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:23,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:22:23,286 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2077578863, now seen corresponding path program 1 times [2022-01-11 07:22:23,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:23,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551181059] [2022-01-11 07:22:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:23,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:23,374 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 07:22:23,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:23,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551181059] [2022-01-11 07:22:23,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551181059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:23,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:23,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:22:23,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954754399] [2022-01-11 07:22:23,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:23,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:22:23,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:22:23,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:22:23,376 INFO L87 Difference]: Start difference. First operand 2665 states and 4165 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:24,064 INFO L93 Difference]: Finished difference Result 3416 states and 5250 transitions. [2022-01-11 07:22:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 07:22:24,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-11 07:22:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:24,070 INFO L225 Difference]: With dead ends: 3416 [2022-01-11 07:22:24,071 INFO L226 Difference]: Without dead ends: 3414 [2022-01-11 07:22:24,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 07:22:24,072 INFO L933 BasicCegarLoop]: 1582 mSDtfsCounter, 241 mSDsluCounter, 4656 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 6238 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:24,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 6238 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:22:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-01-11 07:22:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 2689. [2022-01-11 07:22:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2689 states, 2687 states have (on average 1.550055824339412) internal successors, (4165), 2688 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states 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 07:22:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4165 transitions. [2022-01-11 07:22:24,554 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 4165 transitions. Word has length 55 [2022-01-11 07:22:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:24,554 INFO L470 AbstractCegarLoop]: Abstraction has 2689 states and 4165 transitions. [2022-01-11 07:22:24,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 4165 transitions. [2022-01-11 07:22:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 07:22:24,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:24,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:24,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:22:24,556 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash -264070265, now seen corresponding path program 1 times [2022-01-11 07:22:24,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:24,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305263520] [2022-01-11 07:22:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:24,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:24,606 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 07:22:24,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:24,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305263520] [2022-01-11 07:22:24,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305263520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:24,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:24,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:22:24,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067035350] [2022-01-11 07:22:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:24,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:22:24,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:22:24,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:22:24,607 INFO L87 Difference]: Start difference. First operand 2689 states and 4165 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:22:25,322 INFO L93 Difference]: Finished difference Result 4264 states and 6411 transitions. [2022-01-11 07:22:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:22:25,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-11 07:22:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:22:25,327 INFO L225 Difference]: With dead ends: 4264 [2022-01-11 07:22:25,328 INFO L226 Difference]: Without dead ends: 3253 [2022-01-11 07:22:25,329 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 07:22:25,330 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 1498 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:22:25,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1660 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:22:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2022-01-11 07:22:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3251. [2022-01-11 07:22:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 3249 states have (on average 1.5140043090181594) internal successors, (4919), 3250 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states 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 07:22:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 4919 transitions. [2022-01-11 07:22:25,938 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 4919 transitions. Word has length 56 [2022-01-11 07:22:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:22:25,938 INFO L470 AbstractCegarLoop]: Abstraction has 3251 states and 4919 transitions. [2022-01-11 07:22:25,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 4919 transitions. [2022-01-11 07:22:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 07:22:25,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:22:25,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:22:25,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:22:25,939 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:22:25,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:22:25,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1282016641, now seen corresponding path program 1 times [2022-01-11 07:22:25,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:22:25,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203711924] [2022-01-11 07:22:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:22:25,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:22:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:22:25,983 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 07:22:25,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:22:25,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203711924] [2022-01-11 07:22:25,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203711924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:22:25,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:22:25,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:22:25,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154333614] [2022-01-11 07:22:25,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:22:25,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:22:25,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:22:25,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:22:25,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:22:25,984 INFO L87 Difference]: Start difference. First operand 3251 states and 4919 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:22:28,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 07:22:30,265 WARN L534 Checker$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 07:22:32,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 07:22:34,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 07:22:36,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 07:22:38,876 WARN L534 Checker$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 07:22:41,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 07:22:43,205 WARN L534 Checker$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 07:22:45,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 07:22:47,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []