/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:08:52,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:08:52,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:08:52,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:08:52,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:08:52,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:08:52,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:08:52,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:08:52,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:08:52,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:08:52,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:08:52,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:08:52,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:08:52,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:08:52,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:08:52,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:08:52,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:08:52,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:08:52,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:08:52,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:08:52,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:08:52,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:08:52,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:08:52,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:08:52,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:08:52,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:08:52,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:08:52,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:08:52,337 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 13:08:52,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:08:52,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:08:52,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:08:52,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:08:52,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:08:52,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:08:52,365 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:08:52,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:08:52,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:08:52,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:08:52,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:08:52,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:08:52,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:08:52,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:08:52,366 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:08:52,367 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:08:52,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:08:52,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:08:52,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:08:52,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:08:52,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:08:52,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:08:52,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:08:52,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:08:52,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:08:52,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:08:52,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:08:52,369 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:08:52,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:08:52,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:08:52,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:08:52,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:08:52,370 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:08:52,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:08:52,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:08:52,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:08:52,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:08:52,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:08:52,532 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:08:52,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:08:52,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e93b0c22/43b7b70962e94bd2a0c7c09e06e453f3/FLAGedcfc3c36 [2022-01-10 13:08:52,962 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:08:52,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:08:52,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e93b0c22/43b7b70962e94bd2a0c7c09e06e453f3/FLAGedcfc3c36 [2022-01-10 13:08:53,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e93b0c22/43b7b70962e94bd2a0c7c09e06e453f3 [2022-01-10 13:08:53,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:08:53,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:08:53,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:08:53,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:08:53,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:08:53,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4143f29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53, skipping insertion in model container [2022-01-10 13:08:53,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:08:53,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:08:53,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6876,6889] [2022-01-10 13:08:53,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9071,9084] [2022-01-10 13:08:53,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:08:53,598 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:08:53,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6876,6889] [2022-01-10 13:08:53,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9071,9084] [2022-01-10 13:08:53,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:08:53,652 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:08:53,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53 WrapperNode [2022-01-10 13:08:53,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:08:53,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:08:53,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:08:53,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:08:53,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,693 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 438 [2022-01-10 13:08:53,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:08:53,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:08:53,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:08:53,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:08:53,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:08:53,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:08:53,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:08:53,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:08:53,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (1/1) ... [2022-01-10 13:08:53,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:08:53,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:08:53,765 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 13:08:53,767 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 13:08:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:08:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:08:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:08:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:08:53,878 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:08:53,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:08:54,158 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:08:54,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:08:54,164 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:08:54,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:08:54 BoogieIcfgContainer [2022-01-10 13:08:54,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:08:54,166 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:08:54,166 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:08:54,168 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:08:54,178 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:08:54" (1/1) ... [2022-01-10 13:08:54,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:08:54 BasicIcfg [2022-01-10 13:08:54,522 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:08:54,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:08:54,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:08:54,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:08:54,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:08:53" (1/4) ... [2022-01-10 13:08:54,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa75ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:08:54, skipping insertion in model container [2022-01-10 13:08:54,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:53" (2/4) ... [2022-01-10 13:08:54,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa75ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:08:54, skipping insertion in model container [2022-01-10 13:08:54,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:08:54" (3/4) ... [2022-01-10 13:08:54,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa75ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:08:54, skipping insertion in model container [2022-01-10 13:08:54,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:08:54" (4/4) ... [2022-01-10 13:08:54,529 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:08:54,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:08:54,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:08:54,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:08:54,583 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 13:08:54,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:08:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 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 13:08:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 13:08:54,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:54,623 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] [2022-01-10 13:08:54,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1394518683, now seen corresponding path program 1 times [2022-01-10 13:08:54,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:54,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398674934] [2022-01-10 13:08:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:54,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:08:55,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:55,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398674934] [2022-01-10 13:08:55,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398674934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:55,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:55,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:08:55,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300739838] [2022-01-10 13:08:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:55,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:08:55,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:55,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:08:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:08:55,094 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 13:08:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:08:55,525 INFO L93 Difference]: Finished difference Result 206 states and 333 transitions. [2022-01-10 13:08:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:08:55,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2022-01-10 13:08:55,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:08:55,534 INFO L225 Difference]: With dead ends: 206 [2022-01-10 13:08:55,534 INFO L226 Difference]: Without dead ends: 154 [2022-01-10 13:08:55,537 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 13:08:55,539 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 96 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:08:55,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 350 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 13:08:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-10 13:08:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2022-01-10 13:08:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 1.4333333333333333) internal successors, (215), 151 states have internal predecessors, (215), 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 13:08:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 215 transitions. [2022-01-10 13:08:55,605 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 215 transitions. Word has length 47 [2022-01-10 13:08:55,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:08:55,606 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 215 transitions. [2022-01-10 13:08:55,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 13:08:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 215 transitions. [2022-01-10 13:08:55,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 13:08:55,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:55,608 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] [2022-01-10 13:08:55,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:08:55,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash -281360002, now seen corresponding path program 1 times [2022-01-10 13:08:55,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054342930] [2022-01-10 13:08:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:55,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:55,764 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 13:08:55,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:55,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054342930] [2022-01-10 13:08:55,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054342930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:55,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:55,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:08:55,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952018458] [2022-01-10 13:08:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:55,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:08:55,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:08:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:08:55,772 INFO L87 Difference]: Start difference. First operand 152 states and 215 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 13:08:55,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:08:55,935 INFO L93 Difference]: Finished difference Result 280 states and 410 transitions. [2022-01-10 13:08:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:08:55,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-01-10 13:08:55,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:08:55,942 INFO L225 Difference]: With dead ends: 280 [2022-01-10 13:08:55,942 INFO L226 Difference]: Without dead ends: 197 [2022-01-10 13:08:55,943 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 13:08:55,943 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:08:55,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 305 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:08:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-01-10 13:08:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2022-01-10 13:08:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 193 states have (on average 1.450777202072539) internal successors, (280), 194 states have internal predecessors, (280), 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 13:08:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 280 transitions. [2022-01-10 13:08:55,976 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 280 transitions. Word has length 48 [2022-01-10 13:08:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:08:55,977 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 280 transitions. [2022-01-10 13:08:55,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 13:08:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 280 transitions. [2022-01-10 13:08:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 13:08:55,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:08:55,979 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] [2022-01-10 13:08:55,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:08:55,979 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:08:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:08:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1335203516, now seen corresponding path program 1 times [2022-01-10 13:08:55,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:08:55,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797273108] [2022-01-10 13:08:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:08:55,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:08:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:08:56,320 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 13:08:56,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:08:56,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797273108] [2022-01-10 13:08:56,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797273108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:08:56,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:08:56,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:08:56,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972571790] [2022-01-10 13:08:56,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:08:56,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:08:56,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:08:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:08:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:08:56,322 INFO L87 Difference]: Start difference. First operand 195 states and 280 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 13:08:58,647 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 13:09:00,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:09:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:03,212 INFO L93 Difference]: Finished difference Result 1268 states and 1908 transitions. [2022-01-10 13:09:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:09:03,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 49 [2022-01-10 13:09:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:03,217 INFO L225 Difference]: With dead ends: 1268 [2022-01-10 13:09:03,217 INFO L226 Difference]: Without dead ends: 1099 [2022-01-10 13:09:03,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:09:03,219 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 665 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:03,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1043 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 509 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 13:09:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-01-10 13:09:03,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 455. [2022-01-10 13:09:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 453 states have (on average 1.4922737306843268) internal successors, (676), 454 states have internal predecessors, (676), 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 13:09:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 676 transitions. [2022-01-10 13:09:03,334 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 676 transitions. Word has length 49 [2022-01-10 13:09:03,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:03,335 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 676 transitions. [2022-01-10 13:09:03,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 13:09:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 676 transitions. [2022-01-10 13:09:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 13:09:03,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:03,336 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] [2022-01-10 13:09:03,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:09:03,336 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1436670939, now seen corresponding path program 1 times [2022-01-10 13:09:03,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:03,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336082261] [2022-01-10 13:09:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:03,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:03,599 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 13:09:03,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:03,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336082261] [2022-01-10 13:09:03,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336082261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:03,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:03,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 13:09:03,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830727916] [2022-01-10 13:09:03,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:03,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 13:09:03,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 13:09:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:09:03,601 INFO L87 Difference]: Start difference. First operand 455 states and 676 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 13:09:08,513 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 13:09:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:09,587 INFO L93 Difference]: Finished difference Result 3087 states and 4692 transitions. [2022-01-10 13:09:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:09:09,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2022-01-10 13:09:09,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:09,595 INFO L225 Difference]: With dead ends: 3087 [2022-01-10 13:09:09,595 INFO L226 Difference]: Without dead ends: 2665 [2022-01-10 13:09:09,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 13:09:09,596 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 695 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:09,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 1059 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 561 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-01-10 13:09:09,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-10 13:09:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1110. [2022-01-10 13:09:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1108 states have (on average 1.5027075812274369) internal successors, (1665), 1109 states have internal predecessors, (1665), 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 13:09:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1665 transitions. [2022-01-10 13:09:10,024 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1665 transitions. Word has length 50 [2022-01-10 13:09:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:10,025 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1665 transitions. [2022-01-10 13:09:10,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 13:09:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1665 transitions. [2022-01-10 13:09:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 13:09:10,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:10,026 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] [2022-01-10 13:09:10,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:09:10,026 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:10,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash -977616102, now seen corresponding path program 1 times [2022-01-10 13:09:10,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:10,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400250274] [2022-01-10 13:09:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:10,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:10,309 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 13:09:10,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:10,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400250274] [2022-01-10 13:09:10,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400250274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:10,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:10,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:09:10,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710807858] [2022-01-10 13:09:10,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:10,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:09:10,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:09:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:09:10,311 INFO L87 Difference]: Start difference. First operand 1110 states and 1665 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 13:09:12,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:09:15,637 WARN L534 Checker$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 13:09:17,921 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 13:09:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:21,336 INFO L93 Difference]: Finished difference Result 4899 states and 7432 transitions. [2022-01-10 13:09:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:09:21,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 50 [2022-01-10 13:09:21,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:21,374 INFO L225 Difference]: With dead ends: 4899 [2022-01-10 13:09:21,374 INFO L226 Difference]: Without dead ends: 3891 [2022-01-10 13:09:21,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:09:21,383 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 827 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:21,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1096 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 581 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2022-01-10 13:09:21,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2022-01-10 13:09:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 1355. [2022-01-10 13:09:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1353 states have (on average 1.5055432372505544) internal successors, (2037), 1354 states have internal predecessors, (2037), 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 13:09:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 2037 transitions. [2022-01-10 13:09:21,997 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 2037 transitions. Word has length 50 [2022-01-10 13:09:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:21,997 INFO L470 AbstractCegarLoop]: Abstraction has 1355 states and 2037 transitions. [2022-01-10 13:09:21,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 13:09:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 2037 transitions. [2022-01-10 13:09:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 13:09:21,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:21,998 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] [2022-01-10 13:09:21,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:09:21,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash -948853917, now seen corresponding path program 1 times [2022-01-10 13:09:21,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:21,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445865252] [2022-01-10 13:09:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:21,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:22,220 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 13:09:22,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:22,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445865252] [2022-01-10 13:09:22,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445865252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:22,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:22,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:09:22,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516937654] [2022-01-10 13:09:22,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:22,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:09:22,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:22,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:09:22,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:09:22,222 INFO L87 Difference]: Start difference. First operand 1355 states and 2037 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 13:09:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:22,890 INFO L93 Difference]: Finished difference Result 2078 states and 3126 transitions. [2022-01-10 13:09:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:09:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2022-01-10 13:09:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:22,893 INFO L225 Difference]: With dead ends: 2078 [2022-01-10 13:09:22,893 INFO L226 Difference]: Without dead ends: 826 [2022-01-10 13:09:22,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:09:22,894 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 504 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:22,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 146 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:09:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-01-10 13:09:23,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 817. [2022-01-10 13:09:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 815 states have (on average 1.49079754601227) internal successors, (1215), 816 states have internal predecessors, (1215), 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 13:09:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1215 transitions. [2022-01-10 13:09:23,282 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1215 transitions. Word has length 51 [2022-01-10 13:09:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:23,283 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1215 transitions. [2022-01-10 13:09:23,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 13:09:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1215 transitions. [2022-01-10 13:09:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 13:09:23,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:23,283 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] [2022-01-10 13:09:23,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:09:23,284 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:23,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1393106052, now seen corresponding path program 1 times [2022-01-10 13:09:23,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:23,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340124578] [2022-01-10 13:09:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:23,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:23,458 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 13:09:23,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:23,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340124578] [2022-01-10 13:09:23,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340124578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:23,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:23,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:09:23,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382703251] [2022-01-10 13:09:23,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:23,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:09:23,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:09:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:09:23,460 INFO L87 Difference]: Start difference. First operand 817 states and 1215 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 13:09:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:24,197 INFO L93 Difference]: Finished difference Result 1845 states and 2769 transitions. [2022-01-10 13:09:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:09:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2022-01-10 13:09:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:24,200 INFO L225 Difference]: With dead ends: 1845 [2022-01-10 13:09:24,200 INFO L226 Difference]: Without dead ends: 1057 [2022-01-10 13:09:24,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:09:24,203 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 529 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:24,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 142 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:09:24,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-01-10 13:09:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 580. [2022-01-10 13:09:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 578 states have (on average 1.4740484429065743) internal successors, (852), 579 states have internal predecessors, (852), 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 13:09:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 852 transitions. [2022-01-10 13:09:24,504 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 852 transitions. Word has length 51 [2022-01-10 13:09:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:24,504 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 852 transitions. [2022-01-10 13:09:24,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 13:09:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 852 transitions. [2022-01-10 13:09:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 13:09:24,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:24,506 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] [2022-01-10 13:09:24,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:09:24,506 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:24,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -435348187, now seen corresponding path program 1 times [2022-01-10 13:09:24,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:24,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102997451] [2022-01-10 13:09:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:24,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:24,757 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 13:09:24,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:24,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102997451] [2022-01-10 13:09:24,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102997451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:24,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:24,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:09:24,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220472218] [2022-01-10 13:09:24,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:24,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:09:24,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:09:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:09:24,759 INFO L87 Difference]: Start difference. First operand 580 states and 852 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 13:09:26,898 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 13:09:29,423 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 13:09:30,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:30,680 INFO L93 Difference]: Finished difference Result 2109 states and 3127 transitions. [2022-01-10 13:09:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 13:09:30,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2022-01-10 13:09:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:30,685 INFO L225 Difference]: With dead ends: 2109 [2022-01-10 13:09:30,685 INFO L226 Difference]: Without dead ends: 1601 [2022-01-10 13:09:30,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:09:30,686 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 234 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:30,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 492 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 346 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-01-10 13:09:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2022-01-10 13:09:31,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 599. [2022-01-10 13:09:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 597 states have (on average 1.4623115577889447) internal successors, (873), 598 states have internal predecessors, (873), 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 13:09:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 873 transitions. [2022-01-10 13:09:31,076 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 873 transitions. Word has length 51 [2022-01-10 13:09:31,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:31,077 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 873 transitions. [2022-01-10 13:09:31,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 13:09:31,077 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 873 transitions. [2022-01-10 13:09:31,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 13:09:31,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:31,078 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] [2022-01-10 13:09:31,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:09:31,078 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:31,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash -993417369, now seen corresponding path program 1 times [2022-01-10 13:09:31,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:31,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489586946] [2022-01-10 13:09:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:31,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:31,483 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 13:09:31,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489586946] [2022-01-10 13:09:31,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489586946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:31,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:31,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:09:31,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644378919] [2022-01-10 13:09:31,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:31,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 13:09:31,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 13:09:31,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 13:09:31,485 INFO L87 Difference]: Start difference. First operand 599 states and 873 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 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 13:09:33,991 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 13:09:36,479 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 13:09:38,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:38,480 INFO L93 Difference]: Finished difference Result 1932 states and 2867 transitions. [2022-01-10 13:09:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:09:38,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 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 51 [2022-01-10 13:09:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:38,485 INFO L225 Difference]: With dead ends: 1932 [2022-01-10 13:09:38,485 INFO L226 Difference]: Without dead ends: 1407 [2022-01-10 13:09:38,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-01-10 13:09:38,486 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 310 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:38,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 715 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 460 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 13:09:38,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-01-10 13:09:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 599. [2022-01-10 13:09:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 597 states have (on average 1.4589614740368508) internal successors, (871), 598 states have internal predecessors, (871), 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 13:09:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 871 transitions. [2022-01-10 13:09:38,876 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 871 transitions. Word has length 51 [2022-01-10 13:09:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:38,876 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 871 transitions. [2022-01-10 13:09:38,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 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 13:09:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 871 transitions. [2022-01-10 13:09:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 13:09:38,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:38,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:38,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:09:38,877 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:38,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash 456279548, now seen corresponding path program 1 times [2022-01-10 13:09:38,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:38,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190408217] [2022-01-10 13:09:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:38,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:39,339 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 13:09:39,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:39,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190408217] [2022-01-10 13:09:39,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190408217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:39,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:39,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 13:09:39,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934525665] [2022-01-10 13:09:39,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:39,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 13:09:39,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:39,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 13:09:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-10 13:09:39,340 INFO L87 Difference]: Start difference. First operand 599 states and 871 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:09:43,923 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 13:09:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:46,543 INFO L93 Difference]: Finished difference Result 2409 states and 3572 transitions. [2022-01-10 13:09:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 13:09:46,543 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 13:09:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:46,548 INFO L225 Difference]: With dead ends: 2409 [2022-01-10 13:09:46,548 INFO L226 Difference]: Without dead ends: 1923 [2022-01-10 13:09:46,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2022-01-10 13:09:46,549 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 915 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:46,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 1735 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1403 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 13:09:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-01-10 13:09:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 998. [2022-01-10 13:09:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 996 states have (on average 1.4738955823293172) internal successors, (1468), 997 states have internal predecessors, (1468), 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 13:09:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1468 transitions. [2022-01-10 13:09:47,374 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1468 transitions. Word has length 52 [2022-01-10 13:09:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:47,374 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1468 transitions. [2022-01-10 13:09:47,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:09:47,374 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1468 transitions. [2022-01-10 13:09:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 13:09:47,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:47,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:09:47,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:09:47,375 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:47,375 INFO L85 PathProgramCache]: Analyzing trace with hash -314779909, now seen corresponding path program 1 times [2022-01-10 13:09:47,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:47,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625113508] [2022-01-10 13:09:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:47,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:47,513 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 13:09:47,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:47,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625113508] [2022-01-10 13:09:47,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625113508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:47,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:47,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:09:47,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161657239] [2022-01-10 13:09:47,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:47,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:09:47,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:47,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:09:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:09:47,514 INFO L87 Difference]: Start difference. First operand 998 states and 1468 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:09:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:09:48,963 INFO L93 Difference]: Finished difference Result 2354 states and 3504 transitions. [2022-01-10 13:09:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:09:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 13:09:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:09:48,967 INFO L225 Difference]: With dead ends: 2354 [2022-01-10 13:09:48,968 INFO L226 Difference]: Without dead ends: 1436 [2022-01-10 13:09:48,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:09:48,969 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 459 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:09:48,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 164 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:09:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-01-10 13:09:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1431. [2022-01-10 13:09:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1429 states have (on average 1.4744576627011896) internal successors, (2107), 1430 states have internal predecessors, (2107), 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 13:09:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2107 transitions. [2022-01-10 13:09:50,146 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2107 transitions. Word has length 52 [2022-01-10 13:09:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:09:50,146 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 2107 transitions. [2022-01-10 13:09:50,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:09:50,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2107 transitions. [2022-01-10 13:09:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 13:09:50,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:09:50,146 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] [2022-01-10 13:09:50,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:09:50,146 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:09:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:09:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1555876100, now seen corresponding path program 1 times [2022-01-10 13:09:50,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:09:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580476507] [2022-01-10 13:09:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:09:50,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:09:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:09:51,783 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 13:09:51,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:09:51,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580476507] [2022-01-10 13:09:51,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580476507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:09:51,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:09:51,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-10 13:09:51,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999134323] [2022-01-10 13:09:51,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:09:51,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 13:09:51,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:09:51,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 13:09:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-01-10 13:09:51,785 INFO L87 Difference]: Start difference. First operand 1431 states and 2107 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 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 13:09:55,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:09:58,624 WARN L534 Checker$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 13:10:01,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:10:03,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []