/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:50:48,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:50:48,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:50:48,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:50:48,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:50:48,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:50:48,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:50:48,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:50:48,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:50:48,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:50:48,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:50:48,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:50:48,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:50:48,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:50:48,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:50:48,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:50:48,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:50:48,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:50:48,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:50:48,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:50:48,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:50:48,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:50:48,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:50:48,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:50:48,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:50:48,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:50:48,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:50:48,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:50:48,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:50:48,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:50:48,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:50:48,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:50:48,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:50:48,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:50:48,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:50:48,824 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:50:48,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:50:48,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:50:48,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:50:48,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:50:48,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:50:48,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:50:48,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:50:48,827 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:50:48,827 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:50:49,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:50:49,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:50:49,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:50:49,052 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:50:49,054 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:50:49,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-01-10 13:50:49,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c80e3441/552692d33c1e4f0e942003a07b6ca7b8/FLAG570ae3a5e [2022-01-10 13:50:49,676 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:50:49,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-01-10 13:50:49,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c80e3441/552692d33c1e4f0e942003a07b6ca7b8/FLAG570ae3a5e [2022-01-10 13:50:49,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c80e3441/552692d33c1e4f0e942003a07b6ca7b8 [2022-01-10 13:50:49,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:50:49,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:50:49,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:50:49,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:50:49,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:50:49,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:50:49" (1/1) ... [2022-01-10 13:50:49,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5316c9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:49, skipping insertion in model container [2022-01-10 13:50:49,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:50:49" (1/1) ... [2022-01-10 13:50:49,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:50:49,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:50:50,154 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2022-01-10 13:50:50,190 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2022-01-10 13:50:50,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:50:50,672 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:50:50,704 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2022-01-10 13:50:50,710 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2022-01-10 13:50:50,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:50:50,986 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:50:50,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50 WrapperNode [2022-01-10 13:50:50,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:50:50,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:50:50,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:50:50,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:50:50,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,175 INFO L137 Inliner]: procedures = 36, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4959 [2022-01-10 13:50:51,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:50:51,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:50:51,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:50:51,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:50:51,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:50:51,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:50:51,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:50:51,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:50:51,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (1/1) ... [2022-01-10 13:50:51,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:50:51,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:50:51,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 13:50:51,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:50:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:50:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:50:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:50:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:50:51,495 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:50:51,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:51:11,469 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:51:11,482 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:51:11,482 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 13:51:11,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:51:11 BoogieIcfgContainer [2022-01-10 13:51:11,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:51:11,485 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:51:11,485 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:51:11,486 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:51:11,487 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:51:11" (1/1) ... [2022-01-10 13:51:12,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:51:12 BasicIcfg [2022-01-10 13:51:12,483 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:51:12,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:51:12,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:51:12,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:51:12,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:50:49" (1/4) ... [2022-01-10 13:51:12,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529f8368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:51:12, skipping insertion in model container [2022-01-10 13:51:12,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:50:50" (2/4) ... [2022-01-10 13:51:12,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529f8368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:51:12, skipping insertion in model container [2022-01-10 13:51:12,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:51:11" (3/4) ... [2022-01-10 13:51:12,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529f8368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:51:12, skipping insertion in model container [2022-01-10 13:51:12,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:51:12" (4/4) ... [2022-01-10 13:51:12,489 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.cTransformedIcfg [2022-01-10 13:51:12,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:51:12,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:51:12,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:51:12,543 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 13:51:12,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:51:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 13:51:12,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:12,573 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] [2022-01-10 13:51:12,574 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash 272658997, now seen corresponding path program 1 times [2022-01-10 13:51:12,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:12,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536581031] [2022-01-10 13:51:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:12,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:12,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:12,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536581031] [2022-01-10 13:51:12,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536581031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:12,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:12,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:51:12,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43586960] [2022-01-10 13:51:12,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:12,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 13:51:12,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:12,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 13:51:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 13:51:12,791 INFO L87 Difference]: Start difference. First operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:12,853 INFO L93 Difference]: Finished difference Result 1736 states and 3296 transitions. [2022-01-10 13:51:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 13:51:12,855 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-01-10 13:51:12,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:12,874 INFO L225 Difference]: With dead ends: 1736 [2022-01-10 13:51:12,874 INFO L226 Difference]: Without dead ends: 814 [2022-01-10 13:51:12,880 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 [2022-01-10 13:51:12,883 INFO L933 BasicCegarLoop]: 1600 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, 1600 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 [2022-01-10 13:51:12,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:51:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-01-10 13:51:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-01-10 13:51:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8916256157635467) internal successors, (1536), 813 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1536 transitions. [2022-01-10 13:51:12,951 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1536 transitions. Word has length 26 [2022-01-10 13:51:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:12,951 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1536 transitions. [2022-01-10 13:51:12,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1536 transitions. [2022-01-10 13:51:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 13:51:12,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:12,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:51:12,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:51:12,954 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash -136165228, now seen corresponding path program 1 times [2022-01-10 13:51:12,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:12,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701276482] [2022-01-10 13:51:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:12,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:13,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:13,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701276482] [2022-01-10 13:51:13,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701276482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:13,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:13,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:51:13,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738700100] [2022-01-10 13:51:13,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:13,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:51:13,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:51:13,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:51:13,128 INFO L87 Difference]: Start difference. First operand 814 states and 1536 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:13,209 INFO L93 Difference]: Finished difference Result 856 states and 1599 transitions. [2022-01-10 13:51:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:51:13,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-01-10 13:51:13,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:13,213 INFO L225 Difference]: With dead ends: 856 [2022-01-10 13:51:13,213 INFO L226 Difference]: Without dead ends: 814 [2022-01-10 13:51:13,215 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 [2022-01-10 13:51:13,215 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 3 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6117 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:13,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6117 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:51:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-01-10 13:51:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-01-10 13:51:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8719211822660098) internal successors, (1520), 813 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1520 transitions. [2022-01-10 13:51:13,228 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1520 transitions. Word has length 26 [2022-01-10 13:51:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:13,228 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1520 transitions. [2022-01-10 13:51:13,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1520 transitions. [2022-01-10 13:51:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 13:51:13,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:13,230 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] [2022-01-10 13:51:13,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:51:13,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:13,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:13,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1772411200, now seen corresponding path program 1 times [2022-01-10 13:51:13,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:13,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406079300] [2022-01-10 13:51:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:13,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:13,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:13,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406079300] [2022-01-10 13:51:13,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406079300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:13,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:13,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:51:13,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468506981] [2022-01-10 13:51:13,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:13,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:51:13,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:51:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:13,345 INFO L87 Difference]: Start difference. First operand 814 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:13,368 INFO L93 Difference]: Finished difference Result 884 states and 1628 transitions. [2022-01-10 13:51:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:51:13,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 13:51:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:13,374 INFO L225 Difference]: With dead ends: 884 [2022-01-10 13:51:13,374 INFO L226 Difference]: Without dead ends: 846 [2022-01-10 13:51:13,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:13,379 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1484 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:13,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 1610 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:51:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-01-10 13:51:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2022-01-10 13:51:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 842 states have (on average 1.8610451306413303) internal successors, (1567), 843 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1567 transitions. [2022-01-10 13:51:13,392 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1567 transitions. Word has length 41 [2022-01-10 13:51:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:13,393 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1567 transitions. [2022-01-10 13:51:13,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1567 transitions. [2022-01-10 13:51:13,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 13:51:13,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:13,398 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] [2022-01-10 13:51:13,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:51:13,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash 561284449, now seen corresponding path program 1 times [2022-01-10 13:51:13,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:13,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206613234] [2022-01-10 13:51:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:13,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:13,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:13,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206613234] [2022-01-10 13:51:13,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206613234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:13,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:13,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:51:13,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971891243] [2022-01-10 13:51:13,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:13,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:51:13,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:51:13,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:13,484 INFO L87 Difference]: Start difference. First operand 844 states and 1567 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:13,505 INFO L93 Difference]: Finished difference Result 968 states and 1759 transitions. [2022-01-10 13:51:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:51:13,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 13:51:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:13,508 INFO L225 Difference]: With dead ends: 968 [2022-01-10 13:51:13,508 INFO L226 Difference]: Without dead ends: 900 [2022-01-10 13:51:13,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:13,515 INFO L933 BasicCegarLoop]: 1544 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:13,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 1609 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:51:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-01-10 13:51:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 898. [2022-01-10 13:51:13,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 896 states have (on average 1.8415178571428572) internal successors, (1650), 897 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1650 transitions. [2022-01-10 13:51:13,529 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1650 transitions. Word has length 41 [2022-01-10 13:51:13,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:13,530 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 1650 transitions. [2022-01-10 13:51:13,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1650 transitions. [2022-01-10 13:51:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 13:51:13,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:13,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:51:13,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:51:13,531 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1384144002, now seen corresponding path program 1 times [2022-01-10 13:51:13,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:13,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802466472] [2022-01-10 13:51:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:13,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:14,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:14,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802466472] [2022-01-10 13:51:14,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802466472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:14,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:14,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:51:14,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812074156] [2022-01-10 13:51:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:14,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:51:14,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:51:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:51:14,042 INFO L87 Difference]: Start difference. First operand 898 states and 1650 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:14,313 INFO L93 Difference]: Finished difference Result 1186 states and 2092 transitions. [2022-01-10 13:51:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:51:14,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 13:51:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:14,317 INFO L225 Difference]: With dead ends: 1186 [2022-01-10 13:51:14,317 INFO L226 Difference]: Without dead ends: 1064 [2022-01-10 13:51:14,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:51:14,318 INFO L933 BasicCegarLoop]: 1507 mSDtfsCounter, 4691 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4691 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:14,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4691 Valid, 3037 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:51:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-10 13:51:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1018. [2022-01-10 13:51:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1016 states have (on average 1.8051181102362204) internal successors, (1834), 1017 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1834 transitions. [2022-01-10 13:51:14,343 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1834 transitions. Word has length 41 [2022-01-10 13:51:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:14,343 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1834 transitions. [2022-01-10 13:51:14,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1834 transitions. [2022-01-10 13:51:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 13:51:14,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:14,344 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] [2022-01-10 13:51:14,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:51:14,345 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:14,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1894678179, now seen corresponding path program 1 times [2022-01-10 13:51:14,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:14,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308983400] [2022-01-10 13:51:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:14,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:14,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:14,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308983400] [2022-01-10 13:51:14,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308983400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:14,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:14,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:51:14,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980793855] [2022-01-10 13:51:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:14,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:51:14,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:14,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:51:14,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:51:14,534 INFO L87 Difference]: Start difference. First operand 1018 states and 1834 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:15,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:15,052 INFO L93 Difference]: Finished difference Result 2470 states and 4072 transitions. [2022-01-10 13:51:15,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 13:51:15,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 13:51:15,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:15,061 INFO L225 Difference]: With dead ends: 2470 [2022-01-10 13:51:15,061 INFO L226 Difference]: Without dead ends: 2228 [2022-01-10 13:51:15,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:51:15,063 INFO L933 BasicCegarLoop]: 1516 mSDtfsCounter, 4656 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:15,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4656 Valid, 1980 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:51:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-01-10 13:51:15,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1258. [2022-01-10 13:51:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1256 states have (on average 1.7436305732484076) internal successors, (2190), 1257 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2190 transitions. [2022-01-10 13:51:15,154 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2190 transitions. Word has length 41 [2022-01-10 13:51:15,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:15,155 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 2190 transitions. [2022-01-10 13:51:15,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:15,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2190 transitions. [2022-01-10 13:51:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 13:51:15,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:15,157 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] [2022-01-10 13:51:15,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:51:15,157 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1229147064, now seen corresponding path program 1 times [2022-01-10 13:51:15,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:15,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483932965] [2022-01-10 13:51:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:15,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:15,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:15,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483932965] [2022-01-10 13:51:15,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483932965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:15,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:15,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:51:15,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854966708] [2022-01-10 13:51:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:15,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:51:15,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:51:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:15,258 INFO L87 Difference]: Start difference. First operand 1258 states and 2190 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:15,500 INFO L93 Difference]: Finished difference Result 2118 states and 3464 transitions. [2022-01-10 13:51:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:51:15,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 13:51:15,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:15,505 INFO L225 Difference]: With dead ends: 2118 [2022-01-10 13:51:15,505 INFO L226 Difference]: Without dead ends: 1636 [2022-01-10 13:51:15,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:15,506 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 45 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3068 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 [2022-01-10 13:51:15,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 3068 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:51:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2022-01-10 13:51:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1602. [2022-01-10 13:51:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1600 states have (on average 1.65875) internal successors, (2654), 1601 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2654 transitions. [2022-01-10 13:51:15,641 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2654 transitions. Word has length 43 [2022-01-10 13:51:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:15,643 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 2654 transitions. [2022-01-10 13:51:15,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2654 transitions. [2022-01-10 13:51:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 13:51:15,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:15,643 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] [2022-01-10 13:51:15,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:51:15,644 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1197747350, now seen corresponding path program 1 times [2022-01-10 13:51:15,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:15,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171103577] [2022-01-10 13:51:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:15,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:15,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:15,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171103577] [2022-01-10 13:51:15,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171103577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:15,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:15,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:51:15,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334562787] [2022-01-10 13:51:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:15,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:51:15,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:15,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:51:15,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:51:15,830 INFO L87 Difference]: Start difference. First operand 1602 states and 2654 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:16,601 INFO L93 Difference]: Finished difference Result 4086 states and 6236 transitions. [2022-01-10 13:51:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 13:51:16,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 13:51:16,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:16,611 INFO L225 Difference]: With dead ends: 4086 [2022-01-10 13:51:16,611 INFO L226 Difference]: Without dead ends: 3260 [2022-01-10 13:51:16,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:51:16,614 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 4646 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4646 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:16,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4646 Valid, 1978 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:51:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-01-10 13:51:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 1602. [2022-01-10 13:51:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1600 states have (on average 1.65375) internal successors, (2646), 1601 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2646 transitions. [2022-01-10 13:51:16,845 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2646 transitions. Word has length 43 [2022-01-10 13:51:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:16,845 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 2646 transitions. [2022-01-10 13:51:16,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2646 transitions. [2022-01-10 13:51:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 13:51:16,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:16,846 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] [2022-01-10 13:51:16,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:51:16,846 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:16,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:16,847 INFO L85 PathProgramCache]: Analyzing trace with hash 591541739, now seen corresponding path program 1 times [2022-01-10 13:51:16,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:16,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778271497] [2022-01-10 13:51:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:16,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:16,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778271497] [2022-01-10 13:51:16,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778271497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:16,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:16,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:51:16,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780908363] [2022-01-10 13:51:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:16,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:51:16,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:51:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:16,936 INFO L87 Difference]: Start difference. First operand 1602 states and 2646 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:18,956 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 [] [2022-01-10 13:51:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:19,312 INFO L93 Difference]: Finished difference Result 2626 states and 4112 transitions. [2022-01-10 13:51:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:51:19,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 13:51:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:19,318 INFO L225 Difference]: With dead ends: 2626 [2022-01-10 13:51:19,319 INFO L226 Difference]: Without dead ends: 1800 [2022-01-10 13:51:19,320 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 [2022-01-10 13:51:19,321 INFO L933 BasicCegarLoop]: 1518 mSDtfsCounter, 1470 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:19,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 1570 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 13:51:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2022-01-10 13:51:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1790. [2022-01-10 13:51:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1788 states have (on average 1.6208053691275168) internal successors, (2898), 1789 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2898 transitions. [2022-01-10 13:51:19,593 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2898 transitions. Word has length 44 [2022-01-10 13:51:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:19,593 INFO L470 AbstractCegarLoop]: Abstraction has 1790 states and 2898 transitions. [2022-01-10 13:51:19,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2898 transitions. [2022-01-10 13:51:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 13:51:19,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:19,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:51:19,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:51:19,594 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1499362882, now seen corresponding path program 1 times [2022-01-10 13:51:19,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:19,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301325624] [2022-01-10 13:51:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:19,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:19,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301325624] [2022-01-10 13:51:19,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301325624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:19,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:19,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:51:19,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649589909] [2022-01-10 13:51:19,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:19,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:51:19,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:51:19,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:51:19,664 INFO L87 Difference]: Start difference. First operand 1790 states and 2898 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:19,983 INFO L93 Difference]: Finished difference Result 2317 states and 3653 transitions. [2022-01-10 13:51:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 13:51:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 13:51:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:19,989 INFO L225 Difference]: With dead ends: 2317 [2022-01-10 13:51:19,989 INFO L226 Difference]: Without dead ends: 2315 [2022-01-10 13:51:19,989 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 [2022-01-10 13:51:19,989 INFO L933 BasicCegarLoop]: 1556 mSDtfsCounter, 189 mSDsluCounter, 4591 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:19,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 6147 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:51:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2022-01-10 13:51:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1814. [2022-01-10 13:51:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1812 states have (on average 1.6059602649006623) internal successors, (2910), 1813 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2910 transitions. [2022-01-10 13:51:20,260 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2910 transitions. Word has length 44 [2022-01-10 13:51:20,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:20,261 INFO L470 AbstractCegarLoop]: Abstraction has 1814 states and 2910 transitions. [2022-01-10 13:51:20,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2910 transitions. [2022-01-10 13:51:20,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 13:51:20,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:20,261 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] [2022-01-10 13:51:20,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:51:20,262 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:20,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:20,262 INFO L85 PathProgramCache]: Analyzing trace with hash -623386749, now seen corresponding path program 1 times [2022-01-10 13:51:20,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:20,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429195098] [2022-01-10 13:51:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:20,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:20,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429195098] [2022-01-10 13:51:20,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429195098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:20,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:20,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:51:20,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555875943] [2022-01-10 13:51:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:20,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:51:20,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:51:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:20,302 INFO L87 Difference]: Start difference. First operand 1814 states and 2910 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:51:20,614 INFO L93 Difference]: Finished difference Result 3149 states and 4780 transitions. [2022-01-10 13:51:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:51:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 13:51:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:51:20,620 INFO L225 Difference]: With dead ends: 3149 [2022-01-10 13:51:20,620 INFO L226 Difference]: Without dead ends: 2298 [2022-01-10 13:51:20,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:20,621 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 1485 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:51:20,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1615 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:51:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-01-10 13:51:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2296. [2022-01-10 13:51:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2294 states have (on average 1.5448997384481256) internal successors, (3544), 2295 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3544 transitions. [2022-01-10 13:51:20,960 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3544 transitions. Word has length 45 [2022-01-10 13:51:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:51:20,960 INFO L470 AbstractCegarLoop]: Abstraction has 2296 states and 3544 transitions. [2022-01-10 13:51:20,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:51:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3544 transitions. [2022-01-10 13:51:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 13:51:20,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:51:20,961 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] [2022-01-10 13:51:20,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:51:20,962 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:51:20,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:51:20,962 INFO L85 PathProgramCache]: Analyzing trace with hash -831684121, now seen corresponding path program 1 times [2022-01-10 13:51:20,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:51:20,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178891846] [2022-01-10 13:51:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:51:20,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:51:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:51:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:51:21,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:51:21,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178891846] [2022-01-10 13:51:21,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178891846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:51:21,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:51:21,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:51:21,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213371834] [2022-01-10 13:51:21,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:51:21,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:51:21,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:51:21,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:51:21,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:51:21,014 INFO L87 Difference]: Start difference. First operand 2296 states and 3544 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) [2022-01-10 13:51:23,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:25,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:27,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:29,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:31,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:34,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:36,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:38,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:40,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:42,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:44,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:47,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:49,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:51,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:53,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:55,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:57,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:51:59,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []